/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-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 00:07:31,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 00:07:31,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 00:07:31,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 00:07:31,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-22 00:07:31,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-22 00:07:31,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-22 00:07:31,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-22 00:07:31,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-22 00:07:31,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-22 00:07:31,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-22 00:07:31,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-22 00:07:31,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-22 00:07:31,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-22 00:07:31,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-22 00:07:31,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-22 00:07:31,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-22 00:07:31,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 00:07:31,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 00:07:31,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 00:07:31,646 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 [2021-05-22 00:07:31,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 00:07:31,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 00:07:31,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 00:07:31,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 00:07:31,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 00:07:31,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 00:07:31,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 00:07:31,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 00:07:31,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 00:07:31,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 00:07:31,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 00:07:31,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 00:07:31,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 00:07:31,671 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 00:07:31,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 00:07:31,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 00:07:31,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 00:07:31,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 00:07:31,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-22 00:07:31,959 INFO L275 PluginConnector]: CDTParser initialized [2021-05-22 00:07:31,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2021-05-22 00:07:32,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ecab411/7c46c46ef8b24364b99401b6df74c090/FLAGc4fcef0ab [2021-05-22 00:07:32,550 INFO L306 CDTParser]: Found 1 translation units. [2021-05-22 00:07:32,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2021-05-22 00:07:32,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ecab411/7c46c46ef8b24364b99401b6df74c090/FLAGc4fcef0ab [2021-05-22 00:07:32,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ecab411/7c46c46ef8b24364b99401b6df74c090 [2021-05-22 00:07:32,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 00:07:32,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-22 00:07:33,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-22 00:07:33,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-22 00:07:33,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-22 00:07:33,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 12:07:32" (1/1) ... [2021-05-22 00:07:33,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5266276d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33, skipping insertion in model container [2021-05-22 00:07:33,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 12:07:32" (1/1) ... [2021-05-22 00:07:33,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-22 00:07:33,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-22 00:07:33,315 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-nondet/nondet-array-2.i[30035,30048] [2021-05-22 00:07:33,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 00:07:33,334 INFO L203 MainTranslator]: Completed pre-run [2021-05-22 00:07:33,363 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-nondet/nondet-array-2.i[30035,30048] [2021-05-22 00:07:33,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 00:07:33,440 INFO L208 MainTranslator]: Completed translation [2021-05-22 00:07:33,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33 WrapperNode [2021-05-22 00:07:33,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-22 00:07:33,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 00:07:33,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 00:07:33,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 00:07:33,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 00:07:33,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 00:07:33,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 00:07:33,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 00:07:33,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (1/1) ... [2021-05-22 00:07:33,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 00:07:33,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 00:07:33,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 00:07:33,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 00:07:33,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (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 [2021-05-22 00:07:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-05-22 00:07:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-22 00:07:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-22 00:07:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2021-05-22 00:07:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2021-05-22 00:07:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-22 00:07:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-22 00:07:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-22 00:07:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 00:07:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 00:07:33,616 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 00:07:33,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 00:07:33,999 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-05-22 00:07:34,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 12:07:34 BoogieIcfgContainer [2021-05-22 00:07:34,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 00:07:34,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 00:07:34,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 00:07:34,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 00:07:34,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.05 12:07:32" (1/3) ... [2021-05-22 00:07:34,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26418491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 12:07:34, skipping insertion in model container [2021-05-22 00:07:34,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:33" (2/3) ... [2021-05-22 00:07:34,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26418491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 12:07:34, skipping insertion in model container [2021-05-22 00:07:34,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 12:07:34" (3/3) ... [2021-05-22 00:07:34,006 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2021-05-22 00:07:34,013 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 00:07:34,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 00:07:34,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 00:07:34,014 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 00:07:34,044 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,044 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,044 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,044 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,044 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,045 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,045 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,045 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,047 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,048 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,049 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,051 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,052 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,052 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,052 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,052 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:34,057 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-05-22 00:07:34,074 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:07:34,089 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:34,089 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:34,089 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:34,089 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:34,089 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:34,089 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:34,089 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:34,089 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:07:34,097 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 79 transitions, 166 flow [2021-05-22 00:07:34,122 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 283 states, 277 states have (on average 1.8014440433212997) internal successors, (499), 282 states have internal predecessors, (499), 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) [2021-05-22 00:07:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 277 states have (on average 1.8014440433212997) internal successors, (499), 282 states have internal predecessors, (499), 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) [2021-05-22 00:07:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:07:34,131 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:34,132 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] [2021-05-22 00:07:34,132 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:34,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:34,137 INFO L82 PathProgramCache]: Analyzing trace with hash -837568559, now seen corresponding path program 1 times [2021-05-22 00:07:34,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:34,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238577407] [2021-05-22 00:07:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:34,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:34,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238577407] [2021-05-22 00:07:34,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238577407] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:34,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:34,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 00:07:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768220907] [2021-05-22 00:07:34,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 00:07:34,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:34,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 00:07:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:07:34,306 INFO L87 Difference]: Start difference. First operand has 283 states, 277 states have (on average 1.8014440433212997) internal successors, (499), 282 states have internal predecessors, (499), 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 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:07:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:34,341 INFO L93 Difference]: Finished difference Result 276 states and 458 transitions. [2021-05-22 00:07:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 00:07:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-05-22 00:07:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:34,351 INFO L225 Difference]: With dead ends: 276 [2021-05-22 00:07:34,351 INFO L226 Difference]: Without dead ends: 201 [2021-05-22 00:07:34,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:07:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-22 00:07:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-05-22 00:07:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 199 states have (on average 1.6482412060301508) internal successors, (328), 200 states have internal predecessors, (328), 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) [2021-05-22 00:07:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 328 transitions. [2021-05-22 00:07:34,402 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 328 transitions. Word has length 36 [2021-05-22 00:07:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:34,402 INFO L482 AbstractCegarLoop]: Abstraction has 201 states and 328 transitions. [2021-05-22 00:07:34,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:07:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 328 transitions. [2021-05-22 00:07:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:07:34,404 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:34,404 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] [2021-05-22 00:07:34,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 00:07:34,405 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:34,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:34,405 INFO L82 PathProgramCache]: Analyzing trace with hash -118377934, now seen corresponding path program 1 times [2021-05-22 00:07:34,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:34,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141569420] [2021-05-22 00:07:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:34,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:34,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141569420] [2021-05-22 00:07:34,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141569420] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:34,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:34,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:07:34,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562033655] [2021-05-22 00:07:34,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:07:34,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:34,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:07:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:34,530 INFO L87 Difference]: Start difference. First operand 201 states and 328 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:07:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:34,570 INFO L93 Difference]: Finished difference Result 250 states and 412 transitions. [2021-05-22 00:07:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 00:07:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-05-22 00:07:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:34,573 INFO L225 Difference]: With dead ends: 250 [2021-05-22 00:07:34,573 INFO L226 Difference]: Without dead ends: 222 [2021-05-22 00:07:34,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 00:07:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-22 00:07:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 208. [2021-05-22 00:07:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 206 states have (on average 1.6504854368932038) internal successors, (340), 207 states have internal predecessors, (340), 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) [2021-05-22 00:07:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 340 transitions. [2021-05-22 00:07:34,589 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 340 transitions. Word has length 36 [2021-05-22 00:07:34,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:34,589 INFO L482 AbstractCegarLoop]: Abstraction has 208 states and 340 transitions. [2021-05-22 00:07:34,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:07:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 340 transitions. [2021-05-22 00:07:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-22 00:07:34,591 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:34,591 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] [2021-05-22 00:07:34,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 00:07:34,591 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:34,592 INFO L82 PathProgramCache]: Analyzing trace with hash 14729534, now seen corresponding path program 1 times [2021-05-22 00:07:34,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:34,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293081840] [2021-05-22 00:07:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:34,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:34,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293081840] [2021-05-22 00:07:34,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293081840] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:34,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:34,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:07:34,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310183963] [2021-05-22 00:07:34,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:07:34,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:07:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:34,687 INFO L87 Difference]: Start difference. First operand 208 states and 340 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:07:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:34,756 INFO L93 Difference]: Finished difference Result 139 states and 199 transitions. [2021-05-22 00:07:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-22 00:07:34,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 [2021-05-22 00:07:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:34,757 INFO L225 Difference]: With dead ends: 139 [2021-05-22 00:07:34,757 INFO L226 Difference]: Without dead ends: 116 [2021-05-22 00:07:34,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-22 00:07:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2021-05-22 00:07:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4181818181818182) internal successors, (156), 110 states have internal predecessors, (156), 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) [2021-05-22 00:07:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 156 transitions. [2021-05-22 00:07:34,765 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 156 transitions. Word has length 43 [2021-05-22 00:07:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:34,765 INFO L482 AbstractCegarLoop]: Abstraction has 111 states and 156 transitions. [2021-05-22 00:07:34,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:07:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 156 transitions. [2021-05-22 00:07:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-22 00:07:34,767 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:34,767 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, 1, 1, 1, 1, 1] [2021-05-22 00:07:34,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 00:07:34,768 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:34,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1472368673, now seen corresponding path program 1 times [2021-05-22 00:07:34,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:34,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326892898] [2021-05-22 00:07:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:35,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:35,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326892898] [2021-05-22 00:07:35,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326892898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:35,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527952726] [2021-05-22 00:07:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:35,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-22 00:07:35,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 00:07:35,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527952726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:35,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:35,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2021-05-22 00:07:35,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615454939] [2021-05-22 00:07:35,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:07:35,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:35,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:07:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:07:35,549 INFO L87 Difference]: Start difference. First operand 111 states and 156 transitions. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:07:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:36,593 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2021-05-22 00:07:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 00:07:36,593 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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 65 [2021-05-22 00:07:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:36,594 INFO L225 Difference]: With dead ends: 66 [2021-05-22 00:07:36,594 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:07:36,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1111.2ms TimeCoverageRelationStatistics Valid=312, Invalid=1094, Unknown=0, NotChecked=0, Total=1406 [2021-05-22 00:07:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:07:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:07:36,595 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) [2021-05-22 00:07:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:07:36,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2021-05-22 00:07:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:36,596 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:07:36,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:07:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:07:36,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:07:36,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:36,819 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:07:36,821 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:07:36,822 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:36,822 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:36,822 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:36,822 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:36,822 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:36,822 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:36,822 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:36,822 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:07:36,824 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 79 transitions, 166 flow [2021-05-22 00:07:36,830 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 283 states, 277 states have (on average 1.8014440433212997) internal successors, (499), 282 states have internal predecessors, (499), 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) [2021-05-22 00:07:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 277 states have (on average 1.8014440433212997) internal successors, (499), 282 states have internal predecessors, (499), 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) [2021-05-22 00:07:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-22 00:07:36,832 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:36,832 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:36,832 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:07:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash -116446752, now seen corresponding path program 1 times [2021-05-22 00:07:36,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:36,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543933767] [2021-05-22 00:07:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:36,856 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:36,874 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:36,891 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:07:36,891 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:07:36,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 00:07:36,892 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:07:36,892 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:07:36,892 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-05-22 00:07:36,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,898 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,898 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,899 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,900 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,901 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,902 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,902 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,902 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,902 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,902 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,904 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,904 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,904 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,904 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,904 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:36,907 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-05-22 00:07:36,908 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:07:36,909 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:36,909 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:36,909 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:36,909 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:36,909 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:36,909 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:36,909 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:36,909 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:07:36,911 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 86 transitions, 190 flow [2021-05-22 00:07:36,954 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1807 states, 1797 states have (on average 2.5509181969949917) internal successors, (4584), 1806 states have internal predecessors, (4584), 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) [2021-05-22 00:07:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 1807 states, 1797 states have (on average 2.5509181969949917) internal successors, (4584), 1806 states have internal predecessors, (4584), 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) [2021-05-22 00:07:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:07:36,958 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:36,958 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] [2021-05-22 00:07:36,958 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash 107759953, now seen corresponding path program 1 times [2021-05-22 00:07:36,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:36,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597521765] [2021-05-22 00:07:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:36,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:36,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597521765] [2021-05-22 00:07:36,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597521765] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:36,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:36,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 00:07:36,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322646695] [2021-05-22 00:07:36,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 00:07:36,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:36,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 00:07:36,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:07:36,984 INFO L87 Difference]: Start difference. First operand has 1807 states, 1797 states have (on average 2.5509181969949917) internal successors, (4584), 1806 states have internal predecessors, (4584), 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 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:07:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:36,998 INFO L93 Difference]: Finished difference Result 1758 states and 4274 transitions. [2021-05-22 00:07:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 00:07:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-05-22 00:07:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:37,006 INFO L225 Difference]: With dead ends: 1758 [2021-05-22 00:07:37,006 INFO L226 Difference]: Without dead ends: 1281 [2021-05-22 00:07:37,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:07:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-05-22 00:07:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-05-22 00:07:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1277 states have (on average 2.409553641346907) internal successors, (3077), 1280 states have internal predecessors, (3077), 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) [2021-05-22 00:07:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 3077 transitions. [2021-05-22 00:07:37,085 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 3077 transitions. Word has length 36 [2021-05-22 00:07:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:37,086 INFO L482 AbstractCegarLoop]: Abstraction has 1281 states and 3077 transitions. [2021-05-22 00:07:37,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:07:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 3077 transitions. [2021-05-22 00:07:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:07:37,087 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:37,087 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] [2021-05-22 00:07:37,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 00:07:37,087 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash 826950578, now seen corresponding path program 1 times [2021-05-22 00:07:37,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:37,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32982534] [2021-05-22 00:07:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:37,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:37,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32982534] [2021-05-22 00:07:37,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32982534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:37,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:37,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:07:37,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813846453] [2021-05-22 00:07:37,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:07:37,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:37,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:07:37,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:37,125 INFO L87 Difference]: Start difference. First operand 1281 states and 3077 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:07:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:37,160 INFO L93 Difference]: Finished difference Result 1624 states and 3910 transitions. [2021-05-22 00:07:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 00:07:37,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-05-22 00:07:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:37,167 INFO L225 Difference]: With dead ends: 1624 [2021-05-22 00:07:37,167 INFO L226 Difference]: Without dead ends: 1428 [2021-05-22 00:07:37,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 00:07:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-05-22 00:07:37,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1330. [2021-05-22 00:07:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1326 states have (on average 2.41025641025641) internal successors, (3196), 1329 states have internal predecessors, (3196), 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) [2021-05-22 00:07:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 3196 transitions. [2021-05-22 00:07:37,207 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 3196 transitions. Word has length 36 [2021-05-22 00:07:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:37,207 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 3196 transitions. [2021-05-22 00:07:37,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:07:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 3196 transitions. [2021-05-22 00:07:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-22 00:07:37,208 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:37,208 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] [2021-05-22 00:07:37,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-22 00:07:37,209 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:37,209 INFO L82 PathProgramCache]: Analyzing trace with hash 226916308, now seen corresponding path program 1 times [2021-05-22 00:07:37,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:37,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042400783] [2021-05-22 00:07:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:37,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:37,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042400783] [2021-05-22 00:07:37,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042400783] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:37,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:37,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:07:37,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281339435] [2021-05-22 00:07:37,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:07:37,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:37,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:07:37,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:37,249 INFO L87 Difference]: Start difference. First operand 1330 states and 3196 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:07:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:37,310 INFO L93 Difference]: Finished difference Result 970 states and 2094 transitions. [2021-05-22 00:07:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-22 00:07:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 [2021-05-22 00:07:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:37,314 INFO L225 Difference]: With dead ends: 970 [2021-05-22 00:07:37,315 INFO L226 Difference]: Without dead ends: 839 [2021-05-22 00:07:37,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-05-22 00:07:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 759. [2021-05-22 00:07:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 756 states have (on average 2.1600529100529102) internal successors, (1633), 758 states have internal predecessors, (1633), 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) [2021-05-22 00:07:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1633 transitions. [2021-05-22 00:07:37,335 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1633 transitions. Word has length 43 [2021-05-22 00:07:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:37,336 INFO L482 AbstractCegarLoop]: Abstraction has 759 states and 1633 transitions. [2021-05-22 00:07:37,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:07:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1633 transitions. [2021-05-22 00:07:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-22 00:07:37,337 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:37,338 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, 1, 1, 1, 1, 1] [2021-05-22 00:07:37,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-22 00:07:37,338 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:37,339 INFO L82 PathProgramCache]: Analyzing trace with hash 616828755, now seen corresponding path program 1 times [2021-05-22 00:07:37,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:37,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111321649] [2021-05-22 00:07:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:37,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:37,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111321649] [2021-05-22 00:07:37,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111321649] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:37,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086063998] [2021-05-22 00:07:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:37,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-22 00:07:37,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 00:07:37,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086063998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:37,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:37,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2021-05-22 00:07:37,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678396577] [2021-05-22 00:07:37,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:07:37,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:37,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:07:37,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:07:37,802 INFO L87 Difference]: Start difference. First operand 759 states and 1633 transitions. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:07:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:40,005 INFO L93 Difference]: Finished difference Result 1648 states and 3299 transitions. [2021-05-22 00:07:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-22 00:07:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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 65 [2021-05-22 00:07:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:40,012 INFO L225 Difference]: With dead ends: 1648 [2021-05-22 00:07:40,012 INFO L226 Difference]: Without dead ends: 1608 [2021-05-22 00:07:40,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1785.4ms TimeCoverageRelationStatistics Valid=693, Invalid=2613, Unknown=0, NotChecked=0, Total=3306 [2021-05-22 00:07:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-05-22 00:07:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1116. [2021-05-22 00:07:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1113 states have (on average 2.1455525606469004) internal successors, (2388), 1115 states have internal predecessors, (2388), 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) [2021-05-22 00:07:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 2388 transitions. [2021-05-22 00:07:40,045 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 2388 transitions. Word has length 65 [2021-05-22 00:07:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:40,045 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 2388 transitions. [2021-05-22 00:07:40,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:07:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 2388 transitions. [2021-05-22 00:07:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-22 00:07:40,048 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:40,048 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:40,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:40,261 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:40,261 INFO L82 PathProgramCache]: Analyzing trace with hash 820702413, now seen corresponding path program 1 times [2021-05-22 00:07:40,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:40,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084453816] [2021-05-22 00:07:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:40,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:40,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084453816] [2021-05-22 00:07:40,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084453816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:40,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014125674] [2021-05-22 00:07:40,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:40,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 00:07:40,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:40,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014125674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:40,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:40,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-05-22 00:07:40,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649278121] [2021-05-22 00:07:40,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:07:40,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:07:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:07:40,629 INFO L87 Difference]: Start difference. First operand 1116 states and 2388 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2021-05-22 00:07:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:40,826 INFO L93 Difference]: Finished difference Result 848 states and 1874 transitions. [2021-05-22 00:07:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:07:40,826 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 75 [2021-05-22 00:07:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:40,829 INFO L225 Difference]: With dead ends: 848 [2021-05-22 00:07:40,829 INFO L226 Difference]: Without dead ends: 848 [2021-05-22 00:07:40,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 178.9ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:07:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-05-22 00:07:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 842. [2021-05-22 00:07:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 2.221165279429251) internal successors, (1868), 841 states have internal predecessors, (1868), 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) [2021-05-22 00:07:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1868 transitions. [2021-05-22 00:07:40,849 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1868 transitions. Word has length 75 [2021-05-22 00:07:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:40,850 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 1868 transitions. [2021-05-22 00:07:40,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2021-05-22 00:07:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1868 transitions. [2021-05-22 00:07:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-22 00:07:40,852 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:40,852 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:41,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-22 00:07:41,075 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:41,076 INFO L82 PathProgramCache]: Analyzing trace with hash -721943593, now seen corresponding path program 1 times [2021-05-22 00:07:41,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:41,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583187135] [2021-05-22 00:07:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:07:41,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:41,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583187135] [2021-05-22 00:07:41,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583187135] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:41,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773107005] [2021-05-22 00:07:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 00:07:41,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:07:41,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773107005] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:41,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:41,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-05-22 00:07:41,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943311972] [2021-05-22 00:07:41,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:07:41,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:41,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:07:41,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:07:41,483 INFO L87 Difference]: Start difference. First operand 842 states and 1868 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2021-05-22 00:07:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:41,714 INFO L93 Difference]: Finished difference Result 855 states and 1881 transitions. [2021-05-22 00:07:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:07:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 87 [2021-05-22 00:07:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:41,718 INFO L225 Difference]: With dead ends: 855 [2021-05-22 00:07:41,718 INFO L226 Difference]: Without dead ends: 855 [2021-05-22 00:07:41,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 191.5ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:07:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-05-22 00:07:41,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 562. [2021-05-22 00:07:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 2.2245989304812834) internal successors, (1248), 561 states have internal predecessors, (1248), 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) [2021-05-22 00:07:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1248 transitions. [2021-05-22 00:07:41,734 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1248 transitions. Word has length 87 [2021-05-22 00:07:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:41,734 INFO L482 AbstractCegarLoop]: Abstraction has 562 states and 1248 transitions. [2021-05-22 00:07:41,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2021-05-22 00:07:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1248 transitions. [2021-05-22 00:07:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-22 00:07:41,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:41,740 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:41,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:41,963 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:41,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1114387471, now seen corresponding path program 2 times [2021-05-22 00:07:41,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:41,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726318934] [2021-05-22 00:07:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:07:42,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:42,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726318934] [2021-05-22 00:07:42,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726318934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:42,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668197160] [2021-05-22 00:07:42,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:42,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:07:42,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:07:42,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-22 00:07:42,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-22 00:07:42,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668197160] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:42,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:42,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10] total 30 [2021-05-22 00:07:42,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253869661] [2021-05-22 00:07:42,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-22 00:07:42,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:42,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-22 00:07:42,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-05-22 00:07:42,808 INFO L87 Difference]: Start difference. First operand 562 states and 1248 transitions. Second operand has 30 states, 30 states have (on average 5.366666666666666) internal successors, (161), 30 states have internal predecessors, (161), 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) [2021-05-22 00:07:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:46,690 INFO L93 Difference]: Finished difference Result 426 states and 924 transitions. [2021-05-22 00:07:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-22 00:07:46,690 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.366666666666666) internal successors, (161), 30 states have internal predecessors, (161), 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 94 [2021-05-22 00:07:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:46,691 INFO L225 Difference]: With dead ends: 426 [2021-05-22 00:07:46,691 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:07:46,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 3657.0ms TimeCoverageRelationStatistics Valid=1297, Invalid=6013, Unknown=0, NotChecked=0, Total=7310 [2021-05-22 00:07:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:07:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:07:46,693 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) [2021-05-22 00:07:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:07:46,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2021-05-22 00:07:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:46,693 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:07:46,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.366666666666666) internal successors, (161), 30 states have internal predecessors, (161), 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) [2021-05-22 00:07:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:07:46,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:07:46,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-22 00:07:46,901 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:07:46,902 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:07:46,902 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:46,902 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:46,903 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:46,903 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:46,903 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:46,903 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:46,903 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:46,903 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:07:46,908 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 86 transitions, 190 flow [2021-05-22 00:07:46,942 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1807 states, 1797 states have (on average 2.5509181969949917) internal successors, (4584), 1806 states have internal predecessors, (4584), 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) [2021-05-22 00:07:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 1807 states, 1797 states have (on average 2.5509181969949917) internal successors, (4584), 1806 states have internal predecessors, (4584), 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) [2021-05-22 00:07:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-22 00:07:46,949 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:46,949 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:46,949 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:07:46,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:46,950 INFO L82 PathProgramCache]: Analyzing trace with hash -519909148, now seen corresponding path program 1 times [2021-05-22 00:07:46,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:46,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816377376] [2021-05-22 00:07:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:46,967 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:46,981 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:46,992 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:07:46,992 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:07:46,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-22 00:07:46,993 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:07:46,993 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:07:46,993 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-05-22 00:07:47,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,004 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,004 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,005 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,005 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,006 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,007 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,009 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,009 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,009 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,009 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,009 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,011 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,011 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,012 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,012 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,012 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,013 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,013 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,013 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,013 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,013 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:47,017 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-22 00:07:47,017 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:07:47,018 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:47,018 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:47,018 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:47,018 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:47,018 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:47,018 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:47,018 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:47,018 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:07:47,019 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 93 transitions, 216 flow [2021-05-22 00:07:47,570 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12169 states, 12151 states have (on average 3.291745535346885) internal successors, (39998), 12168 states have internal predecessors, (39998), 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) [2021-05-22 00:07:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 12169 states, 12151 states have (on average 3.291745535346885) internal successors, (39998), 12168 states have internal predecessors, (39998), 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) [2021-05-22 00:07:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:07:47,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:47,602 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] [2021-05-22 00:07:47,602 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1470062994, now seen corresponding path program 1 times [2021-05-22 00:07:47,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:47,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720580802] [2021-05-22 00:07:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:47,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:47,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720580802] [2021-05-22 00:07:47,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720580802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:47,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:47,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 00:07:47,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673996036] [2021-05-22 00:07:47,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 00:07:47,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:47,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 00:07:47,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:07:47,648 INFO L87 Difference]: Start difference. First operand has 12169 states, 12151 states have (on average 3.291745535346885) internal successors, (39998), 12168 states have internal predecessors, (39998), 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 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:07:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:47,725 INFO L93 Difference]: Finished difference Result 11826 states and 37631 transitions. [2021-05-22 00:07:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 00:07:47,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-05-22 00:07:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:47,773 INFO L225 Difference]: With dead ends: 11826 [2021-05-22 00:07:47,773 INFO L226 Difference]: Without dead ends: 8685 [2021-05-22 00:07:47,773 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:07:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8685 states. [2021-05-22 00:07:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8685 to 8685. [2021-05-22 00:07:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8685 states, 8677 states have (on average 3.155468479889363) internal successors, (27380), 8684 states have internal predecessors, (27380), 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) [2021-05-22 00:07:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 27380 transitions. [2021-05-22 00:07:48,057 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 27380 transitions. Word has length 36 [2021-05-22 00:07:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:48,057 INFO L482 AbstractCegarLoop]: Abstraction has 8685 states and 27380 transitions. [2021-05-22 00:07:48,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:07:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 27380 transitions. [2021-05-22 00:07:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:07:48,058 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:48,058 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] [2021-05-22 00:07:48,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-22 00:07:48,058 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash -298259214, now seen corresponding path program 1 times [2021-05-22 00:07:48,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:48,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532583571] [2021-05-22 00:07:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:48,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:48,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532583571] [2021-05-22 00:07:48,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532583571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:48,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:48,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:07:48,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029180270] [2021-05-22 00:07:48,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:07:48,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:07:48,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:48,093 INFO L87 Difference]: Start difference. First operand 8685 states and 27380 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:07:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:48,172 INFO L93 Difference]: Finished difference Result 11086 states and 34926 transitions. [2021-05-22 00:07:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 00:07:48,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-05-22 00:07:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:48,217 INFO L225 Difference]: With dead ends: 11086 [2021-05-22 00:07:48,217 INFO L226 Difference]: Without dead ends: 9714 [2021-05-22 00:07:48,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 00:07:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2021-05-22 00:07:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9028. [2021-05-22 00:07:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9028 states, 9020 states have (on average 3.1549889135254987) internal successors, (28458), 9027 states have internal predecessors, (28458), 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) [2021-05-22 00:07:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 28458 transitions. [2021-05-22 00:07:48,755 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 28458 transitions. Word has length 36 [2021-05-22 00:07:48,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:48,755 INFO L482 AbstractCegarLoop]: Abstraction has 9028 states and 28458 transitions. [2021-05-22 00:07:48,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:07:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 28458 transitions. [2021-05-22 00:07:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-22 00:07:48,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:48,756 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] [2021-05-22 00:07:48,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-22 00:07:48,756 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:48,756 INFO L82 PathProgramCache]: Analyzing trace with hash 56842257, now seen corresponding path program 1 times [2021-05-22 00:07:48,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:48,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007451595] [2021-05-22 00:07:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:48,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:48,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007451595] [2021-05-22 00:07:48,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007451595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:48,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:48,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:07:48,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718882271] [2021-05-22 00:07:48,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:07:48,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:48,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:07:48,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:48,793 INFO L87 Difference]: Start difference. First operand 9028 states and 28458 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:07:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:48,926 INFO L93 Difference]: Finished difference Result 7150 states and 20709 transitions. [2021-05-22 00:07:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-22 00:07:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 [2021-05-22 00:07:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:48,944 INFO L225 Difference]: With dead ends: 7150 [2021-05-22 00:07:48,944 INFO L226 Difference]: Without dead ends: 6371 [2021-05-22 00:07:48,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:07:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6371 states. [2021-05-22 00:07:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6371 to 5613. [2021-05-22 00:07:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5613 states, 5606 states have (on average 2.89885836603639) internal successors, (16251), 5612 states have internal predecessors, (16251), 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) [2021-05-22 00:07:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 16251 transitions. [2021-05-22 00:07:49,167 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 16251 transitions. Word has length 43 [2021-05-22 00:07:49,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:49,168 INFO L482 AbstractCegarLoop]: Abstraction has 5613 states and 16251 transitions. [2021-05-22 00:07:49,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:07:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 16251 transitions. [2021-05-22 00:07:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-22 00:07:49,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:49,173 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, 1, 1, 1, 1, 1] [2021-05-22 00:07:49,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-22 00:07:49,174 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:49,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:49,174 INFO L82 PathProgramCache]: Analyzing trace with hash -443131308, now seen corresponding path program 1 times [2021-05-22 00:07:49,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:49,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391684484] [2021-05-22 00:07:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:49,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:49,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391684484] [2021-05-22 00:07:49,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391684484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:49,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036093656] [2021-05-22 00:07:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:49,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-22 00:07:49,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 00:07:49,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036093656] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:49,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:49,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2021-05-22 00:07:49,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676932178] [2021-05-22 00:07:49,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:07:49,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:07:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:07:49,651 INFO L87 Difference]: Start difference. First operand 5613 states and 16251 transitions. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:07:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:51,693 INFO L93 Difference]: Finished difference Result 14453 states and 39208 transitions. [2021-05-22 00:07:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-22 00:07:51,693 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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 65 [2021-05-22 00:07:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:51,727 INFO L225 Difference]: With dead ends: 14453 [2021-05-22 00:07:51,727 INFO L226 Difference]: Without dead ends: 14101 [2021-05-22 00:07:51,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1668.9ms TimeCoverageRelationStatistics Valid=693, Invalid=2613, Unknown=0, NotChecked=0, Total=3306 [2021-05-22 00:07:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14101 states. [2021-05-22 00:07:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14101 to 8596. [2021-05-22 00:07:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8589 states have (on average 2.8797298870648502) internal successors, (24734), 8595 states have internal predecessors, (24734), 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) [2021-05-22 00:07:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 24734 transitions. [2021-05-22 00:07:51,958 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 24734 transitions. Word has length 65 [2021-05-22 00:07:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:51,959 INFO L482 AbstractCegarLoop]: Abstraction has 8596 states and 24734 transitions. [2021-05-22 00:07:51,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:07:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 24734 transitions. [2021-05-22 00:07:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-22 00:07:51,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:51,973 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:52,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-22 00:07:52,193 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:52,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:52,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1826271885, now seen corresponding path program 1 times [2021-05-22 00:07:52,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:52,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052806343] [2021-05-22 00:07:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:52,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:52,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052806343] [2021-05-22 00:07:52,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052806343] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:52,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796448161] [2021-05-22 00:07:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 00:07:52,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:07:52,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796448161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:52,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:52,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-05-22 00:07:52,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824990641] [2021-05-22 00:07:52,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:07:52,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:52,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:07:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:07:52,513 INFO L87 Difference]: Start difference. First operand 8596 states and 24734 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2021-05-22 00:07:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:52,760 INFO L93 Difference]: Finished difference Result 6575 states and 18910 transitions. [2021-05-22 00:07:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:07:52,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 75 [2021-05-22 00:07:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:52,778 INFO L225 Difference]: With dead ends: 6575 [2021-05-22 00:07:52,779 INFO L226 Difference]: Without dead ends: 6575 [2021-05-22 00:07:52,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:07:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2021-05-22 00:07:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6414. [2021-05-22 00:07:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6414 states, 6410 states have (on average 2.9085803432137287) internal successors, (18644), 6413 states have internal predecessors, (18644), 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) [2021-05-22 00:07:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6414 states to 6414 states and 18644 transitions. [2021-05-22 00:07:52,904 INFO L78 Accepts]: Start accepts. Automaton has 6414 states and 18644 transitions. Word has length 75 [2021-05-22 00:07:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:52,904 INFO L482 AbstractCegarLoop]: Abstraction has 6414 states and 18644 transitions. [2021-05-22 00:07:52,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2021-05-22 00:07:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6414 states and 18644 transitions. [2021-05-22 00:07:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-22 00:07:52,918 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:52,918 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:53,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-22 00:07:53,139 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:53,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1130097105, now seen corresponding path program 1 times [2021-05-22 00:07:53,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:53,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668742577] [2021-05-22 00:07:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:07:53,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:53,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668742577] [2021-05-22 00:07:53,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668742577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:53,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410250532] [2021-05-22 00:07:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:53,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 00:07:53,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:07:53,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410250532] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:53,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:53,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-05-22 00:07:53,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544893975] [2021-05-22 00:07:53,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:07:53,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:53,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:07:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:07:53,491 INFO L87 Difference]: Start difference. First operand 6414 states and 18644 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2021-05-22 00:07:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:53,690 INFO L93 Difference]: Finished difference Result 6658 states and 19080 transitions. [2021-05-22 00:07:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:07:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 87 [2021-05-22 00:07:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:53,703 INFO L225 Difference]: With dead ends: 6658 [2021-05-22 00:07:53,704 INFO L226 Difference]: Without dead ends: 6658 [2021-05-22 00:07:53,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:07:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2021-05-22 00:07:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 4138. [2021-05-22 00:07:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4134 states have (on average 2.908321238509918) internal successors, (12023), 4137 states have internal predecessors, (12023), 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) [2021-05-22 00:07:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 12023 transitions. [2021-05-22 00:07:53,797 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 12023 transitions. Word has length 87 [2021-05-22 00:07:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:53,798 INFO L482 AbstractCegarLoop]: Abstraction has 4138 states and 12023 transitions. [2021-05-22 00:07:53,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2021-05-22 00:07:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 12023 transitions. [2021-05-22 00:07:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-22 00:07:53,807 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:53,807 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:54,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:54,021 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:54,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:54,021 INFO L82 PathProgramCache]: Analyzing trace with hash 693301842, now seen corresponding path program 2 times [2021-05-22 00:07:54,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:54,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856548426] [2021-05-22 00:07:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:07:54,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:54,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856548426] [2021-05-22 00:07:54,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856548426] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:54,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552074798] [2021-05-22 00:07:54,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:54,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:07:54,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:07:54,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-22 00:07:54,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-22 00:07:54,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552074798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:54,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:54,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10] total 30 [2021-05-22 00:07:54,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789258647] [2021-05-22 00:07:54,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-22 00:07:54,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:54,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-22 00:07:54,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-05-22 00:07:54,967 INFO L87 Difference]: Start difference. First operand 4138 states and 12023 transitions. Second operand has 30 states, 30 states have (on average 5.366666666666666) internal successors, (161), 30 states have internal predecessors, (161), 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) [2021-05-22 00:08:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:03,953 INFO L93 Difference]: Finished difference Result 8651 states and 22909 transitions. [2021-05-22 00:08:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-05-22 00:08:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.366666666666666) internal successors, (161), 30 states have internal predecessors, (161), 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 94 [2021-05-22 00:08:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:03,972 INFO L225 Difference]: With dead ends: 8651 [2021-05-22 00:08:03,972 INFO L226 Difference]: Without dead ends: 8599 [2021-05-22 00:08:03,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6698 ImplicationChecksByTransitivity, 7677.3ms TimeCoverageRelationStatistics Valid=3460, Invalid=17132, Unknown=0, NotChecked=0, Total=20592 [2021-05-22 00:08:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8599 states. [2021-05-22 00:08:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8599 to 5260. [2021-05-22 00:08:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5256 states have (on average 2.8557838660578385) internal successors, (15010), 5259 states have internal predecessors, (15010), 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) [2021-05-22 00:08:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 15010 transitions. [2021-05-22 00:08:04,103 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 15010 transitions. Word has length 94 [2021-05-22 00:08:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:04,104 INFO L482 AbstractCegarLoop]: Abstraction has 5260 states and 15010 transitions. [2021-05-22 00:08:04,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.366666666666666) internal successors, (161), 30 states have internal predecessors, (161), 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) [2021-05-22 00:08:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 15010 transitions. [2021-05-22 00:08:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-22 00:08:04,116 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:04,116 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:04,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:04,339 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1524803346, now seen corresponding path program 1 times [2021-05-22 00:08:04,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:04,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327146160] [2021-05-22 00:08:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-22 00:08:04,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:04,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327146160] [2021-05-22 00:08:04,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327146160] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:04,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426886397] [2021-05-22 00:08:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:04,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:08:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-22 00:08:04,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426886397] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:04,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:04,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-05-22 00:08:04,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12640725] [2021-05-22 00:08:04,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:08:04,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:08:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:08:04,798 INFO L87 Difference]: Start difference. First operand 5260 states and 15010 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 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) [2021-05-22 00:08:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:05,085 INFO L93 Difference]: Finished difference Result 4750 states and 14048 transitions. [2021-05-22 00:08:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-22 00:08:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 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 104 [2021-05-22 00:08:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:05,094 INFO L225 Difference]: With dead ends: 4750 [2021-05-22 00:08:05,094 INFO L226 Difference]: Without dead ends: 4750 [2021-05-22 00:08:05,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 283.8ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-05-22 00:08:05,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2021-05-22 00:08:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 4744. [2021-05-22 00:08:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4744 states, 4743 states have (on average 2.960573476702509) internal successors, (14042), 4743 states have internal predecessors, (14042), 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) [2021-05-22 00:08:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4744 states to 4744 states and 14042 transitions. [2021-05-22 00:08:05,187 INFO L78 Accepts]: Start accepts. Automaton has 4744 states and 14042 transitions. Word has length 104 [2021-05-22 00:08:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:05,187 INFO L482 AbstractCegarLoop]: Abstraction has 4744 states and 14042 transitions. [2021-05-22 00:08:05,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 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) [2021-05-22 00:08:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4744 states and 14042 transitions. [2021-05-22 00:08:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-22 00:08:05,196 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:05,196 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:05,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:05,413 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1761423950, now seen corresponding path program 1 times [2021-05-22 00:08:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:05,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291153152] [2021-05-22 00:08:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-22 00:08:05,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:05,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291153152] [2021-05-22 00:08:05,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291153152] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:05,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538079453] [2021-05-22 00:08:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:05,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:08:05,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-22 00:08:05,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538079453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:05,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:05,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-05-22 00:08:05,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930707303] [2021-05-22 00:08:05,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:08:05,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:08:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:08:05,862 INFO L87 Difference]: Start difference. First operand 4744 states and 14042 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 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) [2021-05-22 00:08:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:06,136 INFO L93 Difference]: Finished difference Result 4764 states and 14062 transitions. [2021-05-22 00:08:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-22 00:08:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 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 116 [2021-05-22 00:08:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:06,143 INFO L225 Difference]: With dead ends: 4764 [2021-05-22 00:08:06,143 INFO L226 Difference]: Without dead ends: 4764 [2021-05-22 00:08:06,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 289.0ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-05-22 00:08:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2021-05-22 00:08:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 3527. [2021-05-22 00:08:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3526 states have (on average 3.047929665343165) internal successors, (10747), 3526 states have internal predecessors, (10747), 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) [2021-05-22 00:08:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 10747 transitions. [2021-05-22 00:08:06,223 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 10747 transitions. Word has length 116 [2021-05-22 00:08:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:06,224 INFO L482 AbstractCegarLoop]: Abstraction has 3527 states and 10747 transitions. [2021-05-22 00:08:06,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 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) [2021-05-22 00:08:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 10747 transitions. [2021-05-22 00:08:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-22 00:08:06,231 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:06,231 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:06,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-22 00:08:06,450 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:06,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:06,450 INFO L82 PathProgramCache]: Analyzing trace with hash 856553141, now seen corresponding path program 2 times [2021-05-22 00:08:06,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:06,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923617108] [2021-05-22 00:08:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-05-22 00:08:07,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:07,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923617108] [2021-05-22 00:08:07,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923617108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:07,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111888803] [2021-05-22 00:08:07,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:07,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:08:07,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:07,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:07,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-22 00:08:07,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111888803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:07,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:07,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 39 [2021-05-22 00:08:07,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480441765] [2021-05-22 00:08:07,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-22 00:08:07,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:07,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-22 00:08:07,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:08:07,722 INFO L87 Difference]: Start difference. First operand 3527 states and 10747 transitions. Second operand has 39 states, 39 states have (on average 5.230769230769231) internal successors, (204), 39 states have internal predecessors, (204), 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) [2021-05-22 00:08:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:15,528 INFO L93 Difference]: Finished difference Result 3146 states and 9284 transitions. [2021-05-22 00:08:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-22 00:08:15,529 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.230769230769231) internal successors, (204), 39 states have internal predecessors, (204), 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 123 [2021-05-22 00:08:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:15,529 INFO L225 Difference]: With dead ends: 3146 [2021-05-22 00:08:15,529 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:08:15,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6513 ImplicationChecksByTransitivity, 7589.1ms TimeCoverageRelationStatistics Valid=3024, Invalid=17856, Unknown=0, NotChecked=0, Total=20880 [2021-05-22 00:08:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:08:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:08:15,533 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) [2021-05-22 00:08:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:08:15,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2021-05-22 00:08:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:15,533 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:08:15,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.230769230769231) internal successors, (204), 39 states have internal predecessors, (204), 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) [2021-05-22 00:08:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:08:15,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:08:15,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:15,734 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:08:15,734 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:08:15,734 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:15,734 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:15,734 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:15,735 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:15,735 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:15,735 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:15,735 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:15,735 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:08:15,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 93 transitions, 216 flow [2021-05-22 00:08:16,096 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12169 states, 12151 states have (on average 3.291745535346885) internal successors, (39998), 12168 states have internal predecessors, (39998), 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) [2021-05-22 00:08:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 12169 states, 12151 states have (on average 3.291745535346885) internal successors, (39998), 12168 states have internal predecessors, (39998), 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) [2021-05-22 00:08:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:16,122 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:16,122 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:16,122 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:08:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash -788640589, now seen corresponding path program 1 times [2021-05-22 00:08:16,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:16,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459622714] [2021-05-22 00:08:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:16,135 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:16,142 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:16,154 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:08:16,154 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:08:16,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-22 00:08:16,154 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:08:16,154 WARN L242 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:08:16,154 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,163 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,164 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,165 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,166 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,167 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,167 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,167 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,167 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,167 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,168 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,168 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,168 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,168 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,168 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,169 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,169 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,169 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,169 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,170 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,170 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,171 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,171 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,171 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,171 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:16,175 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-05-22 00:08:16,175 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:08:16,176 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:16,176 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:16,176 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:16,176 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:16,176 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:16,176 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:16,176 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:16,176 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:08:16,177 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 100 transitions, 244 flow [2021-05-22 00:08:28,191 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 82867 states, 82833 states have (on average 4.02511076503326) internal successors, (333412), 82866 states have internal predecessors, (333412), 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) [2021-05-22 00:08:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 82867 states, 82833 states have (on average 4.02511076503326) internal successors, (333412), 82866 states have internal predecessors, (333412), 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) [2021-05-22 00:08:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:08:28,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:28,289 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] [2021-05-22 00:08:28,289 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:28,289 INFO L82 PathProgramCache]: Analyzing trace with hash 81769361, now seen corresponding path program 1 times [2021-05-22 00:08:28,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:28,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785982666] [2021-05-22 00:08:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:28,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:28,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785982666] [2021-05-22 00:08:28,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785982666] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:28,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:28,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 00:08:28,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716114407] [2021-05-22 00:08:28,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 00:08:28,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 00:08:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:08:28,405 INFO L87 Difference]: Start difference. First operand has 82867 states, 82833 states have (on average 4.02511076503326) internal successors, (333412), 82866 states have internal predecessors, (333412), 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 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:08:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:29,401 INFO L93 Difference]: Finished difference Result 80466 states and 315392 transitions. [2021-05-22 00:08:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 00:08:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-05-22 00:08:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:29,621 INFO L225 Difference]: With dead ends: 80466 [2021-05-22 00:08:29,621 INFO L226 Difference]: Without dead ends: 59577 [2021-05-22 00:08:29,621 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:08:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59577 states. [2021-05-22 00:08:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59577 to 59577. [2021-05-22 00:08:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59577 states, 59561 states have (on average 3.8908513960477493) internal successors, (231743), 59576 states have internal predecessors, (231743), 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) [2021-05-22 00:08:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59577 states to 59577 states and 231743 transitions. [2021-05-22 00:08:31,979 INFO L78 Accepts]: Start accepts. Automaton has 59577 states and 231743 transitions. Word has length 36 [2021-05-22 00:08:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:31,979 INFO L482 AbstractCegarLoop]: Abstraction has 59577 states and 231743 transitions. [2021-05-22 00:08:31,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:08:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 59577 states and 231743 transitions. [2021-05-22 00:08:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:08:31,980 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:31,980 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] [2021-05-22 00:08:31,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-22 00:08:31,980 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:31,980 INFO L82 PathProgramCache]: Analyzing trace with hash 800959986, now seen corresponding path program 1 times [2021-05-22 00:08:31,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:31,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281065081] [2021-05-22 00:08:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:32,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:32,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281065081] [2021-05-22 00:08:32,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281065081] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:32,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:32,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:08:32,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058070441] [2021-05-22 00:08:32,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:08:32,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:32,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:08:32,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:08:32,003 INFO L87 Difference]: Start difference. First operand 59577 states and 231743 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:08:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:32,958 INFO L93 Difference]: Finished difference Result 76384 states and 296570 transitions. [2021-05-22 00:08:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 00:08:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-05-22 00:08:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:33,185 INFO L225 Difference]: With dead ends: 76384 [2021-05-22 00:08:33,186 INFO L226 Difference]: Without dead ends: 66780 [2021-05-22 00:08:33,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 00:08:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66780 states. [2021-05-22 00:08:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66780 to 61978. [2021-05-22 00:08:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61978 states, 61962 states have (on average 3.889545205125722) internal successors, (241004), 61977 states have internal predecessors, (241004), 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) [2021-05-22 00:08:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61978 states to 61978 states and 241004 transitions. [2021-05-22 00:08:35,383 INFO L78 Accepts]: Start accepts. Automaton has 61978 states and 241004 transitions. Word has length 36 [2021-05-22 00:08:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:35,383 INFO L482 AbstractCegarLoop]: Abstraction has 61978 states and 241004 transitions. [2021-05-22 00:08:35,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:08:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 61978 states and 241004 transitions. [2021-05-22 00:08:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-22 00:08:35,383 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:35,383 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] [2021-05-22 00:08:35,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-22 00:08:35,384 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash -495492619, now seen corresponding path program 1 times [2021-05-22 00:08:35,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:35,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079444794] [2021-05-22 00:08:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:35,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:35,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079444794] [2021-05-22 00:08:35,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079444794] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:35,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:35,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:08:35,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113561409] [2021-05-22 00:08:35,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:08:35,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:08:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:08:35,411 INFO L87 Difference]: Start difference. First operand 61978 states and 241004 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:08:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:36,070 INFO L93 Difference]: Finished difference Result 52570 states and 190902 transitions. [2021-05-22 00:08:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-22 00:08:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 [2021-05-22 00:08:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:36,215 INFO L225 Difference]: With dead ends: 52570 [2021-05-22 00:08:36,215 INFO L226 Difference]: Without dead ends: 47903 [2021-05-22 00:08:36,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:08:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47903 states. [2021-05-22 00:08:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47903 to 41499. [2021-05-22 00:08:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41499 states, 41484 states have (on average 3.6330392440458974) internal successors, (150713), 41498 states have internal predecessors, (150713), 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) [2021-05-22 00:08:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41499 states to 41499 states and 150713 transitions. [2021-05-22 00:08:37,426 INFO L78 Accepts]: Start accepts. Automaton has 41499 states and 150713 transitions. Word has length 43 [2021-05-22 00:08:37,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:37,426 INFO L482 AbstractCegarLoop]: Abstraction has 41499 states and 150713 transitions. [2021-05-22 00:08:37,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2021-05-22 00:08:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41499 states and 150713 transitions. [2021-05-22 00:08:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-22 00:08:37,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:37,434 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, 1, 1, 1, 1, 1] [2021-05-22 00:08:37,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-22 00:08:37,434 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -812869803, now seen corresponding path program 1 times [2021-05-22 00:08:37,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:37,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144925001] [2021-05-22 00:08:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:08:37,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:37,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144925001] [2021-05-22 00:08:37,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144925001] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:37,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825993363] [2021-05-22 00:08:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:37,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-22 00:08:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 00:08:37,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825993363] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:37,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:37,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2021-05-22 00:08:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048740827] [2021-05-22 00:08:37,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:08:37,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:08:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:08:37,799 INFO L87 Difference]: Start difference. First operand 41499 states and 150713 transitions. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:08:38,970 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2021-05-22 00:08:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:40,564 INFO L93 Difference]: Finished difference Result 114663 states and 395435 transitions. [2021-05-22 00:08:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-22 00:08:40,564 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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 65 [2021-05-22 00:08:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:40,873 INFO L225 Difference]: With dead ends: 114663 [2021-05-22 00:08:40,874 INFO L226 Difference]: Without dead ends: 111767 [2021-05-22 00:08:40,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1735.0ms TimeCoverageRelationStatistics Valid=693, Invalid=2613, Unknown=0, NotChecked=0, Total=3306 [2021-05-22 00:08:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111767 states. [2021-05-22 00:08:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111767 to 63566. [2021-05-22 00:08:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63566 states, 63551 states have (on average 3.6156630108102155) internal successors, (229779), 63565 states have internal predecessors, (229779), 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) [2021-05-22 00:08:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63566 states to 63566 states and 229779 transitions. [2021-05-22 00:08:43,248 INFO L78 Accepts]: Start accepts. Automaton has 63566 states and 229779 transitions. Word has length 65 [2021-05-22 00:08:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:43,248 INFO L482 AbstractCegarLoop]: Abstraction has 63566 states and 229779 transitions. [2021-05-22 00:08:43,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 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) [2021-05-22 00:08:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 63566 states and 229779 transitions. [2021-05-22 00:08:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-22 00:08:43,290 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:43,290 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:43,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-22 00:08:43,493 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:43,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:43,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1855327111, now seen corresponding path program 1 times [2021-05-22 00:08:43,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:43,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815751065] [2021-05-22 00:08:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:08:43,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:43,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815751065] [2021-05-22 00:08:43,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815751065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:43,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751402385] [2021-05-22 00:08:43,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:43,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 00:08:43,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:08:43,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751402385] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:43,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:43,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-05-22 00:08:43,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741337529] [2021-05-22 00:08:43,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:08:43,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:08:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:08:43,797 INFO L87 Difference]: Start difference. First operand 63566 states and 229779 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2021-05-22 00:08:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:44,214 INFO L93 Difference]: Finished difference Result 48489 states and 172626 transitions. [2021-05-22 00:08:44,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:08:44,215 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 75 [2021-05-22 00:08:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:44,329 INFO L225 Difference]: With dead ends: 48489 [2021-05-22 00:08:44,329 INFO L226 Difference]: Without dead ends: 48489 [2021-05-22 00:08:44,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 172.6ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:08:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48489 states. [2021-05-22 00:08:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48489 to 46564. [2021-05-22 00:08:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46564 states, 46553 states have (on average 3.60692114364273) internal successors, (167913), 46563 states have internal predecessors, (167913), 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) [2021-05-22 00:08:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46564 states to 46564 states and 167913 transitions. [2021-05-22 00:08:45,634 INFO L78 Accepts]: Start accepts. Automaton has 46564 states and 167913 transitions. Word has length 75 [2021-05-22 00:08:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:45,634 INFO L482 AbstractCegarLoop]: Abstraction has 46564 states and 167913 transitions. [2021-05-22 00:08:45,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2021-05-22 00:08:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 46564 states and 167913 transitions. [2021-05-22 00:08:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-22 00:08:46,066 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:46,066 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:46,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:46,266 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash -548641454, now seen corresponding path program 1 times [2021-05-22 00:08:46,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:46,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131879520] [2021-05-22 00:08:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:08:46,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:46,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131879520] [2021-05-22 00:08:46,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131879520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:46,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543442953] [2021-05-22 00:08:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:46,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 00:08:46,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:08:46,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543442953] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:46,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:46,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-05-22 00:08:46,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077659261] [2021-05-22 00:08:46,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:08:46,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:46,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:08:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:08:46,559 INFO L87 Difference]: Start difference. First operand 46564 states and 167913 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2021-05-22 00:08:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:46,905 INFO L93 Difference]: Finished difference Result 49640 states and 175827 transitions. [2021-05-22 00:08:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:08:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 87 [2021-05-22 00:08:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:47,007 INFO L225 Difference]: With dead ends: 49640 [2021-05-22 00:08:47,008 INFO L226 Difference]: Without dead ends: 49640 [2021-05-22 00:08:47,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:08:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49640 states. [2021-05-22 00:08:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49640 to 30454. [2021-05-22 00:08:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30454 states, 30443 states have (on average 3.5773741089905724) internal successors, (108906), 30453 states have internal predecessors, (108906), 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) [2021-05-22 00:08:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30454 states to 30454 states and 108906 transitions. [2021-05-22 00:08:48,064 INFO L78 Accepts]: Start accepts. Automaton has 30454 states and 108906 transitions. Word has length 87 [2021-05-22 00:08:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:48,064 INFO L482 AbstractCegarLoop]: Abstraction has 30454 states and 108906 transitions. [2021-05-22 00:08:48,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2021-05-22 00:08:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 30454 states and 108906 transitions. [2021-05-22 00:08:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-22 00:08:48,111 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:48,111 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:48,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:48,312 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash 581803669, now seen corresponding path program 2 times [2021-05-22 00:08:48,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:48,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164683050] [2021-05-22 00:08:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 00:08:48,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:48,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164683050] [2021-05-22 00:08:48,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164683050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:48,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071283620] [2021-05-22 00:08:48,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:48,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:08:48,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:48,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-22 00:08:48,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-22 00:08:49,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071283620] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:49,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:49,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10] total 30 [2021-05-22 00:08:49,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742907769] [2021-05-22 00:08:49,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-22 00:08:49,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-22 00:08:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-05-22 00:08:49,062 INFO L87 Difference]: Start difference. First operand 30454 states and 108906 transitions. Second operand has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 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) [2021-05-22 00:08:52,325 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-05-22 00:08:54,887 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-05-22 00:08:57,284 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-05-22 00:08:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:58,523 INFO L93 Difference]: Finished difference Result 74277 states and 245798 transitions. [2021-05-22 00:08:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-05-22 00:08:58,524 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 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 94 [2021-05-22 00:08:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:58,692 INFO L225 Difference]: With dead ends: 74277 [2021-05-22 00:08:58,692 INFO L226 Difference]: Without dead ends: 73737 [2021-05-22 00:08:58,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6688 ImplicationChecksByTransitivity, 7289.9ms TimeCoverageRelationStatistics Valid=3460, Invalid=17132, Unknown=0, NotChecked=0, Total=20592 [2021-05-22 00:08:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73737 states. [2021-05-22 00:08:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73737 to 41432. [2021-05-22 00:08:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41432 states, 41421 states have (on average 3.527051495618165) internal successors, (146094), 41431 states have internal predecessors, (146094), 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) [2021-05-22 00:08:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41432 states to 41432 states and 146094 transitions. [2021-05-22 00:08:59,837 INFO L78 Accepts]: Start accepts. Automaton has 41432 states and 146094 transitions. Word has length 94 [2021-05-22 00:08:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:59,837 INFO L482 AbstractCegarLoop]: Abstraction has 41432 states and 146094 transitions. [2021-05-22 00:08:59,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 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) [2021-05-22 00:08:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 41432 states and 146094 transitions. [2021-05-22 00:08:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-22 00:08:59,902 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:59,902 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:00,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:00,105 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:00,105 INFO L82 PathProgramCache]: Analyzing trace with hash -93655180, now seen corresponding path program 1 times [2021-05-22 00:09:00,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:00,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459966203] [2021-05-22 00:09:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-22 00:09:00,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:00,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459966203] [2021-05-22 00:09:00,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459966203] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:00,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686587634] [2021-05-22 00:09:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:00,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:09:00,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-22 00:09:00,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686587634] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:00,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:00,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-05-22 00:09:00,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182896811] [2021-05-22 00:09:00,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:09:00,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:00,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:09:00,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:09:00,518 INFO L87 Difference]: Start difference. First operand 41432 states and 146094 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 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) [2021-05-22 00:09:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:01,206 INFO L93 Difference]: Finished difference Result 36166 states and 131386 transitions. [2021-05-22 00:09:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-22 00:09:01,206 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 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 104 [2021-05-22 00:09:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:01,282 INFO L225 Difference]: With dead ends: 36166 [2021-05-22 00:09:01,282 INFO L226 Difference]: Without dead ends: 36166 [2021-05-22 00:09:01,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 268.5ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-05-22 00:09:01,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36166 states. [2021-05-22 00:09:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36166 to 35988. [2021-05-22 00:09:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35988 states, 35983 states have (on average 3.6434983186504737) internal successors, (131104), 35987 states have internal predecessors, (131104), 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) [2021-05-22 00:09:02,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35988 states to 35988 states and 131104 transitions. [2021-05-22 00:09:02,379 INFO L78 Accepts]: Start accepts. Automaton has 35988 states and 131104 transitions. Word has length 104 [2021-05-22 00:09:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:02,379 INFO L482 AbstractCegarLoop]: Abstraction has 35988 states and 131104 transitions. [2021-05-22 00:09:02,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 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) [2021-05-22 00:09:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 35988 states and 131104 transitions. [2021-05-22 00:09:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-22 00:09:02,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:02,446 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:02,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-05-22 00:09:02,647 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:02,647 INFO L82 PathProgramCache]: Analyzing trace with hash -359947281, now seen corresponding path program 1 times [2021-05-22 00:09:02,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:02,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032720355] [2021-05-22 00:09:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-22 00:09:02,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:02,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032720355] [2021-05-22 00:09:02,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032720355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:02,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995442098] [2021-05-22 00:09:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:02,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:09:02,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-22 00:09:03,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995442098] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:03,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:03,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-05-22 00:09:03,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937572943] [2021-05-22 00:09:03,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:09:03,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:03,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:09:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:09:03,072 INFO L87 Difference]: Start difference. First operand 35988 states and 131104 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 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) [2021-05-22 00:09:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:03,463 INFO L93 Difference]: Finished difference Result 36432 states and 131892 transitions. [2021-05-22 00:09:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-22 00:09:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 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 116 [2021-05-22 00:09:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:03,543 INFO L225 Difference]: With dead ends: 36432 [2021-05-22 00:09:03,543 INFO L226 Difference]: Without dead ends: 36432 [2021-05-22 00:09:03,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 266.5ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-05-22 00:09:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36432 states. [2021-05-22 00:09:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36432 to 25763. [2021-05-22 00:09:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25763 states, 25758 states have (on average 3.723891606491187) internal successors, (95920), 25762 states have internal predecessors, (95920), 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) [2021-05-22 00:09:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25763 states to 25763 states and 95920 transitions. [2021-05-22 00:09:04,469 INFO L78 Accepts]: Start accepts. Automaton has 25763 states and 95920 transitions. Word has length 116 [2021-05-22 00:09:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:04,469 INFO L482 AbstractCegarLoop]: Abstraction has 25763 states and 95920 transitions. [2021-05-22 00:09:04,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 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) [2021-05-22 00:09:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 25763 states and 95920 transitions. [2021-05-22 00:09:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-22 00:09:04,515 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:04,515 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:04,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-22 00:09:04,716 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:04,716 INFO L82 PathProgramCache]: Analyzing trace with hash 8725848, now seen corresponding path program 2 times [2021-05-22 00:09:04,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:04,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424186476] [2021-05-22 00:09:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-22 00:09:05,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:05,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424186476] [2021-05-22 00:09:05,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424186476] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:05,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17208265] [2021-05-22 00:09:05,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:05,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:09:05,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:05,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:09:05,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-22 00:09:05,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17208265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:05,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:05,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 39 [2021-05-22 00:09:05,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25421053] [2021-05-22 00:09:05,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-22 00:09:05,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:05,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-22 00:09:05,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:09:05,790 INFO L87 Difference]: Start difference. First operand 25763 states and 95920 transitions. Second operand has 39 states, 39 states have (on average 5.076923076923077) internal successors, (198), 39 states have internal predecessors, (198), 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) [2021-05-22 00:09:06,554 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-05-22 00:09:09,086 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2021-05-22 00:09:16,983 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-05-22 00:09:19,517 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-05-22 00:09:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:22,671 INFO L93 Difference]: Finished difference Result 60625 states and 208743 transitions. [2021-05-22 00:09:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-05-22 00:09:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.076923076923077) internal successors, (198), 39 states have internal predecessors, (198), 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 123 [2021-05-22 00:09:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:22,817 INFO L225 Difference]: With dead ends: 60625 [2021-05-22 00:09:22,817 INFO L226 Difference]: Without dead ends: 60565 [2021-05-22 00:09:22,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17602 ImplicationChecksByTransitivity, 14038.0ms TimeCoverageRelationStatistics Valid=6707, Invalid=43245, Unknown=0, NotChecked=0, Total=49952 [2021-05-22 00:09:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60565 states. [2021-05-22 00:09:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60565 to 29267. [2021-05-22 00:09:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29267 states, 29262 states have (on average 3.6900075182830974) internal successors, (107977), 29266 states have internal predecessors, (107977), 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) [2021-05-22 00:09:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 107977 transitions. [2021-05-22 00:09:23,931 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 107977 transitions. Word has length 123 [2021-05-22 00:09:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:23,931 INFO L482 AbstractCegarLoop]: Abstraction has 29267 states and 107977 transitions. [2021-05-22 00:09:23,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.076923076923077) internal successors, (198), 39 states have internal predecessors, (198), 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) [2021-05-22 00:09:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 107977 transitions. [2021-05-22 00:09:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-22 00:09:23,983 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:23,983 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:24,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-22 00:09:24,184 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:24,184 INFO L82 PathProgramCache]: Analyzing trace with hash 991552002, now seen corresponding path program 1 times [2021-05-22 00:09:24,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:24,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47341636] [2021-05-22 00:09:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-22 00:09:24,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:24,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47341636] [2021-05-22 00:09:24,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47341636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:24,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557375853] [2021-05-22 00:09:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:24,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:09:24,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-22 00:09:24,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557375853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:24,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:24,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2021-05-22 00:09:24,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177646879] [2021-05-22 00:09:24,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:09:24,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:24,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:09:24,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:09:24,683 INFO L87 Difference]: Start difference. First operand 29267 states and 107977 transitions. Second operand has 26 states, 26 states have (on average 6.269230769230769) internal successors, (163), 26 states have internal predecessors, (163), 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) [2021-05-22 00:09:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:25,178 INFO L93 Difference]: Finished difference Result 28433 states and 106419 transitions. [2021-05-22 00:09:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-22 00:09:25,179 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.269230769230769) internal successors, (163), 26 states have internal predecessors, (163), 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 133 [2021-05-22 00:09:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:25,243 INFO L225 Difference]: With dead ends: 28433 [2021-05-22 00:09:25,243 INFO L226 Difference]: Without dead ends: 28433 [2021-05-22 00:09:25,244 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 393.3ms TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2021-05-22 00:09:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28433 states. [2021-05-22 00:09:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28433 to 28427. [2021-05-22 00:09:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28427 states, 28426 states have (on average 3.7435094631675225) internal successors, (106413), 28426 states have internal predecessors, (106413), 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) [2021-05-22 00:09:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28427 states to 28427 states and 106413 transitions. [2021-05-22 00:09:26,040 INFO L78 Accepts]: Start accepts. Automaton has 28427 states and 106413 transitions. Word has length 133 [2021-05-22 00:09:26,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:26,041 INFO L482 AbstractCegarLoop]: Abstraction has 28427 states and 106413 transitions. [2021-05-22 00:09:26,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.269230769230769) internal successors, (163), 26 states have internal predecessors, (163), 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) [2021-05-22 00:09:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 28427 states and 106413 transitions. [2021-05-22 00:09:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-22 00:09:26,091 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:26,091 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:26,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-22 00:09:26,291 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:26,292 INFO L82 PathProgramCache]: Analyzing trace with hash 76155949, now seen corresponding path program 1 times [2021-05-22 00:09:26,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:26,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476850822] [2021-05-22 00:09:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-22 00:09:26,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:26,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476850822] [2021-05-22 00:09:26,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476850822] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:26,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032160443] [2021-05-22 00:09:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:09:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-22 00:09:26,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032160443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:26,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:26,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2021-05-22 00:09:26,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344392950] [2021-05-22 00:09:26,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:09:26,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:26,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:09:26,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:09:26,867 INFO L87 Difference]: Start difference. First operand 28427 states and 106413 transitions. Second operand has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 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) [2021-05-22 00:09:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:27,365 INFO L93 Difference]: Finished difference Result 28454 states and 106440 transitions. [2021-05-22 00:09:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-22 00:09:27,365 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 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 145 [2021-05-22 00:09:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:27,431 INFO L225 Difference]: With dead ends: 28454 [2021-05-22 00:09:27,431 INFO L226 Difference]: Without dead ends: 28454 [2021-05-22 00:09:27,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 406.6ms TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2021-05-22 00:09:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28454 states. [2021-05-22 00:09:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28454 to 23340. [2021-05-22 00:09:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23340 states, 23339 states have (on average 3.828013196795064) internal successors, (89342), 23339 states have internal predecessors, (89342), 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) [2021-05-22 00:09:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23340 states to 23340 states and 89342 transitions. [2021-05-22 00:09:28,211 INFO L78 Accepts]: Start accepts. Automaton has 23340 states and 89342 transitions. Word has length 145 [2021-05-22 00:09:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:28,211 INFO L482 AbstractCegarLoop]: Abstraction has 23340 states and 89342 transitions. [2021-05-22 00:09:28,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 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) [2021-05-22 00:09:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 23340 states and 89342 transitions. [2021-05-22 00:09:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-05-22 00:09:28,253 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:28,253 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:28,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-22 00:09:28,453 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:28,454 INFO L82 PathProgramCache]: Analyzing trace with hash -276128934, now seen corresponding path program 2 times [2021-05-22 00:09:28,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:28,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585237888] [2021-05-22 00:09:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-05-22 00:09:29,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:29,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585237888] [2021-05-22 00:09:29,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585237888] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:29,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320802415] [2021-05-22 00:09:29,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:29,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:09:29,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:29,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:09:29,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:29,649 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-05-22 00:09:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-05-22 00:09:30,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320802415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:30,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:30,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 14] total 48 [2021-05-22 00:09:30,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309499242] [2021-05-22 00:09:30,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-22 00:09:30,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:30,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-22 00:09:30,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2083, Unknown=0, NotChecked=0, Total=2256 [2021-05-22 00:09:30,059 INFO L87 Difference]: Start difference. First operand 23340 states and 89342 transitions. Second operand has 48 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 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) [2021-05-22 00:09:32,136 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2021-05-22 00:09:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:42,862 INFO L93 Difference]: Finished difference Result 21466 states and 80632 transitions. [2021-05-22 00:09:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2021-05-22 00:09:42,862 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 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 152 [2021-05-22 00:09:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:42,862 INFO L225 Difference]: With dead ends: 21466 [2021-05-22 00:09:42,862 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:09:42,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13182 ImplicationChecksByTransitivity, 12009.1ms TimeCoverageRelationStatistics Valid=4924, Invalid=35276, Unknown=0, NotChecked=0, Total=40200 [2021-05-22 00:09:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:09:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:09:42,864 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) [2021-05-22 00:09:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:09:42,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2021-05-22 00:09:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:42,865 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:09:42,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 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) [2021-05-22 00:09:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:09:42,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:09:43,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:43,066 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:09:43,066 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:09:43,066 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:09:43,066 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:09:43,066 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:09:43,066 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:09:43,066 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:09:43,066 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:09:43,066 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:09:43,066 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:09:43,067 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 100 transitions, 244 flow [2021-05-22 00:09:55,662 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 82867 states, 82833 states have (on average 4.02511076503326) internal successors, (333412), 82866 states have internal predecessors, (333412), 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) [2021-05-22 00:09:55,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 82867 states, 82833 states have (on average 4.02511076503326) internal successors, (333412), 82866 states have internal predecessors, (333412), 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) [2021-05-22 00:09:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:09:55,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:55,794 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:55,794 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:09:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash -556403091, now seen corresponding path program 1 times [2021-05-22 00:09:55,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:55,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828558648] [2021-05-22 00:09:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:09:55,805 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:09:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:09:55,813 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:09:55,821 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:09:55,821 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:09:55,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-22 00:09:55,821 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:09:55,821 WARN L242 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:09:55,821 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-05-22 00:09:55,830 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,831 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,832 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,834 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,835 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,836 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,836 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,837 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,837 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,837 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,837 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,837 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,838 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,838 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,838 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,838 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,838 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,839 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,839 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,839 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,839 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,839 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,840 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,840 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,841 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,841 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,841 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:55,846 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-05-22 00:09:55,847 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:09:55,847 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:09:55,847 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:09:55,847 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:09:55,847 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:09:55,847 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:09:55,847 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:09:55,847 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:09:55,848 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:09:55,848 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 107 places, 107 transitions, 274 flow [2021-05-22 00:19:30,843 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 566737 states, 566671 states have (on average 4.754345996177676) internal successors, (2694150), 566736 states have internal predecessors, (2694150), 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) [2021-05-22 00:19:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 566737 states, 566671 states have (on average 4.754345996177676) internal successors, (2694150), 566736 states have internal predecessors, (2694150), 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) [2021-05-22 00:19:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:19:31,499 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:19:31,500 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] [2021-05-22 00:19:31,500 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:19:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:19:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash -889549743, now seen corresponding path program 1 times [2021-05-22 00:19:31,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:19:31,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612272325] [2021-05-22 00:19:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:19:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:19:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:19:31,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:19:31,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612272325] [2021-05-22 00:19:31,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612272325] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:19:31,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:19:31,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 00:19:31,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193304736] [2021-05-22 00:19:31,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 00:19:31,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:19:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 00:19:31,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:19:32,125 INFO L87 Difference]: Start difference. First operand has 566737 states, 566671 states have (on average 4.754345996177676) internal successors, (2694150), 566736 states have internal predecessors, (2694150), 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 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:19:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:19:38,634 INFO L93 Difference]: Finished difference Result 549930 states and 2557565 transitions. [2021-05-22 00:19:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 00:19:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-05-22 00:19:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:19:43,422 INFO L225 Difference]: With dead ends: 549930 [2021-05-22 00:19:43,422 INFO L226 Difference]: Without dead ends: 410205 [2021-05-22 00:19:43,422 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 00:19:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410205 states. [2021-05-22 00:20:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410205 to 410205. [2021-05-22 00:20:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410205 states, 410173 states have (on average 4.6216840211325465) internal successors, (1895690), 410204 states have internal predecessors, (1895690), 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) [2021-05-22 00:20:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410205 states to 410205 states and 1895690 transitions. [2021-05-22 00:20:07,827 INFO L78 Accepts]: Start accepts. Automaton has 410205 states and 1895690 transitions. Word has length 36 [2021-05-22 00:20:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:20:07,827 INFO L482 AbstractCegarLoop]: Abstraction has 410205 states and 1895690 transitions. [2021-05-22 00:20:07,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-05-22 00:20:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 410205 states and 1895690 transitions. [2021-05-22 00:20:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 00:20:07,827 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:20:07,828 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] [2021-05-22 00:20:07,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-22 00:20:07,828 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:20:07,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:20:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash -170359118, now seen corresponding path program 1 times [2021-05-22 00:20:07,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:20:07,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44248153] [2021-05-22 00:20:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:20:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:20:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:20:07,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:20:07,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44248153] [2021-05-22 00:20:07,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44248153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:20:07,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:20:07,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-22 00:20:07,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106234143] [2021-05-22 00:20:07,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 00:20:07,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:20:07,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 00:20:07,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-22 00:20:07,849 INFO L87 Difference]: Start difference. First operand 410205 states and 1895690 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-05-22 00:20:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:20:14,132 INFO L93 Difference]: Finished difference Result 527854 states and 2433514 transitions. [2021-05-22 00:20:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 00:20:14,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-05-22 00:20:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:20:19,452 INFO L225 Difference]: With dead ends: 527854 [2021-05-22 00:20:19,452 INFO L226 Difference]: Without dead ends: 460626 [2021-05-22 00:20:19,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-22 00:20:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460626 states. Received shutdown request... [2021-05-22 00:20:33,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-22 00:20:33,558 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:20:33,558 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 00:20:33,558 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:20:33,559 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:20:33,559 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:20:33,559 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:20:33,559 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:20:33,559 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:20:33,559 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:20:33,559 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:20:33,559 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:20:33,566 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 107 places, 107 transitions, 274 flow [2021-05-22 00:20:33,567 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:20:33,567 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 00:20:33,567 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 5 thread instances [2021-05-22 00:20:33,570 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 00:20:33,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 12:20:33 BasicIcfg [2021-05-22 00:20:33,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 00:20:33,571 INFO L168 Benchmark]: Toolchain (without parser) took 780572.33 ms. Allocated memory was 373.3 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 335.8 MB in the beginning and 8.8 GB in the end (delta: -8.5 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. [2021-05-22 00:20:33,571 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory was 354.3 MB in the beginning and 354.2 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 00:20:33,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.63 ms. Allocated memory is still 373.3 MB. Free memory was 335.6 MB in the beginning and 336.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-05-22 00:20:33,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.57 ms. Allocated memory is still 373.3 MB. Free memory was 336.8 MB in the beginning and 334.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:20:33,572 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 ms. Allocated memory is still 373.3 MB. Free memory was 334.7 MB in the beginning and 333.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:20:33,572 INFO L168 Benchmark]: RCFGBuilder took 456.29 ms. Allocated memory is still 373.3 MB. Free memory was 333.7 MB in the beginning and 308.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-22 00:20:33,573 INFO L168 Benchmark]: TraceAbstraction took 779569.26 ms. Allocated memory was 373.3 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 307.5 MB in the beginning and 8.8 GB in the end (delta: -8.5 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. [2021-05-22 00:20:33,573 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 373.3 MB. Free memory was 354.3 MB in the beginning and 354.2 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 433.63 ms. Allocated memory is still 373.3 MB. Free memory was 335.6 MB in the beginning and 336.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.57 ms. Allocated memory is still 373.3 MB. Free memory was 336.8 MB in the beginning and 334.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.53 ms. Allocated memory is still 373.3 MB. Free memory was 334.7 MB in the beginning and 333.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 456.29 ms. Allocated memory is still 373.3 MB. Free memory was 333.7 MB in the beginning and 308.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 779569.26 ms. Allocated memory was 373.3 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 307.5 MB in the beginning and 8.8 GB in the end (delta: -8.5 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 689]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2732.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 1232.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 248 SDtfs, 186 SDslu, 664 SDs, 0 SdLazy, 225 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1152.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=283occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 61.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.9ms SsaConstructionTime, 173.9ms SatisfiabilityAnalysisTime, 780.1ms InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 726 SizeOfPredicates, 6 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/7 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 with 2 thread instances CFG has 4 procedures, 85 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9992.2ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 15.5ms, AutomataDifference: 6668.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 44.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 702 SDtfs, 2303 SDslu, 4172 SDs, 0 SdLazy, 2184 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1136.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 306 SyntacticMatches, 3 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2977 ImplicationChecksByTransitivity, 5844.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1807occurred in iteration=0, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 204.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 969 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.4ms SsaConstructionTime, 164.0ms SatisfiabilityAnalysisTime, 1711.3ms InterpolantComputationTime, 757 NumberOfCodeBlocks, 757 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 746 ConstructedInterpolants, 0 QuantifiedInterpolants, 3050 SizeOfPredicates, 28 NumberOfNonLiveVariables, 678 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 49/135 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 with 3 thread instances CFG has 5 procedures, 91 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28716.0ms, OverallIterations: 10, TraceHistogramMax: 3, EmptinessCheckTime: 102.5ms, AutomataDifference: 20382.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 552.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1569 SDtfs, 7806 SDslu, 11756 SDs, 0 SdLazy, 6564 SolverSat, 947 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2940.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1098 GetRequests, 628 SyntacticMatches, 7 SemanticMatches, 463 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14820 ImplicationChecksByTransitivity, 17876.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12169occurred in iteration=0, InterpolantAutomatonStates: 363, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1789.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 14212 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 117.3ms SsaConstructionTime, 252.2ms SatisfiabilityAnalysisTime, 3599.7ms InterpolantComputationTime, 1443 NumberOfCodeBlocks, 1443 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1426 ConstructedInterpolants, 0 QuantifiedInterpolants, 7189 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1367 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 193/517 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 with 4 thread instances CFG has 6 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 86889.6ms, OverallIterations: 13, TraceHistogramMax: 4, EmptinessCheckTime: 944.3ms, AutomataDifference: 49191.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12015.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3069 SDtfs, 16440 SDslu, 31230 SDs, 0 SdLazy, 16581 SolverSat, 1836 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6559.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1874 GetRequests, 1031 SyntacticMatches, 12 SemanticMatches, 831 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40169 ImplicationChecksByTransitivity, 36763.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=82867occurred in iteration=0, InterpolantAutomatonStates: 661, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16351.0ms AutomataMinimizationTime, 13 MinimizatonAttempts, 160088 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 149.8ms SsaConstructionTime, 341.6ms SatisfiabilityAnalysisTime, 5331.5ms InterpolantComputationTime, 2303 NumberOfCodeBlocks, 2303 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2280 ConstructedInterpolants, 0 QuantifiedInterpolants, 12429 SizeOfPredicates, 102 NumberOfNonLiveVariables, 2209 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 535/1291 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 with 5 thread instances CFG has 7 procedures, 103 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 637710.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 656.3ms, AutomataDifference: 23518.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 574995.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 266 SDtfs, 81 SDslu, 341 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=566737occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38508.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 3.3ms SatisfiabilityAnalysisTime, 19.2ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 3 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 69.7ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 1.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=283occurred 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: TRACE_CHECK: 1.5ms SsaConstructionTime, 18.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 2 thread instances CFG has 4 procedures, 85 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 90.1ms, OverallIterations: 1, TraceHistogramMax: 3, EmptinessCheckTime: 5.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1807occurred 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: TRACE_CHECK: 1.3ms SsaConstructionTime, 12.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 3 thread instances CFG has 5 procedures, 91 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 419.8ms, OverallIterations: 1, TraceHistogramMax: 4, EmptinessCheckTime: 26.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 361.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12169occurred 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: TRACE_CHECK: 1.0ms SsaConstructionTime, 8.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 4 thread instances CFG has 6 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12754.8ms, OverallIterations: 1, TraceHistogramMax: 5, EmptinessCheckTime: 131.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12595.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=82867occurred 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: TRACE_CHECK: 1.0ms SsaConstructionTime, 7.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 5 thread instances CFG has 7 procedures, 103 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 8.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown