/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 18:24:16,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 18:24:16,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 18:24:16,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 18:24:16,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 18:24:16,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 18:24:16,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 18:24:17,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 18:24:17,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 18:24:17,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 18:24:17,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 18:24:17,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 18:24:17,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 18:24:17,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 18:24:17,046 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 18:24:17,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 18:24:17,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 18:24:17,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 18:24:17,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 18:24:17,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 18:24:17,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 18:24:17,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 18:24:17,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 18:24:17,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 18:24:17,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 18:24:17,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 18:24:17,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 18:24:17,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 18:24:17,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 18:24:17,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 18:24:17,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 18:24:17,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 18:24:17,376 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 18:24:17,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-05 18:24:17,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae63de456/fea67e640a26442aab38e9d914783c2b/FLAGebadaaa9a [2021-06-05 18:24:17,953 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 18:24:17,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-05 18:24:17,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae63de456/fea67e640a26442aab38e9d914783c2b/FLAGebadaaa9a [2021-06-05 18:24:18,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae63de456/fea67e640a26442aab38e9d914783c2b [2021-06-05 18:24:18,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 18:24:18,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 18:24:18,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 18:24:18,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 18:24:18,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 18:24:18,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4016153a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18, skipping insertion in model container [2021-06-05 18:24:18,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 18:24:18,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 18:24:18,496 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 18:24:18,669 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-atomic/szymanski.i[31505,31518] [2021-06-05 18:24:18,682 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-atomic/szymanski.i[32915,32928] [2021-06-05 18:24:18,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 18:24:18,700 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 18:24:18,721 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 18:24:18,738 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-atomic/szymanski.i[31505,31518] [2021-06-05 18:24:18,748 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-atomic/szymanski.i[32915,32928] [2021-06-05 18:24:18,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 18:24:18,822 INFO L208 MainTranslator]: Completed translation [2021-06-05 18:24:18,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18 WrapperNode [2021-06-05 18:24:18,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 18:24:18,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 18:24:18,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 18:24:18,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 18:24:18,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 18:24:18,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 18:24:18,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 18:24:18,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 18:24:18,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... [2021-06-05 18:24:18,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 18:24:18,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 18:24:18,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 18:24:18,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 18:24:18,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 18:24:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 18:24:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-05 18:24:19,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-05 18:24:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 18:24:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 18:24:19,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 18:24:19,011 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 18:24:19,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 18:24:19,369 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-06-05 18:24:19,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:24:19 BoogieIcfgContainer [2021-06-05 18:24:19,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 18:24:19,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 18:24:19,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 18:24:19,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 18:24:19,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 06:24:18" (1/3) ... [2021-06-05 18:24:19,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e83ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:24:19, skipping insertion in model container [2021-06-05 18:24:19,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:18" (2/3) ... [2021-06-05 18:24:19,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e83ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:24:19, skipping insertion in model container [2021-06-05 18:24:19,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:24:19" (3/3) ... [2021-06-05 18:24:19,380 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-06-05 18:24:19,385 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 18:24:19,385 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 18:24:19,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-05 18:24:19,386 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 18:24:19,419 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,420 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,420 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,420 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,423 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,423 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,423 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,423 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,423 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,427 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,427 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,427 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,427 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,428 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,428 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,429 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,429 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,445 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,446 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:19,454 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 18:24:19,470 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:19,485 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:19,485 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:19,485 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:19,485 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:19,485 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:19,486 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:19,486 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:19,486 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2======== [2021-06-05 18:24:19,495 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-05 18:24:19,643 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:19,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:19,700 INFO L301 ceAbstractionStarter]: Result for error location thr2 was SAFE (1/5) [2021-06-05 18:24:19,702 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:19,712 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:19,713 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:19,713 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:19,713 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:19,713 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:19,713 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:19,713 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:19,713 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1======== [2021-06-05 18:24:19,716 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-05 18:24:19,826 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:19,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:19,854 INFO L301 ceAbstractionStarter]: Result for error location thr1 was SAFE (2/5) [2021-06-05 18:24:19,856 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:19,865 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:19,865 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:19,865 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:19,865 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:19,865 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:19,865 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:19,865 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:19,866 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-06-05 18:24:19,873 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-05 18:24:19,998 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-05 18:24:20,010 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:20,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:20,011 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:20,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1929720339, now seen corresponding path program 1 times [2021-06-05 18:24:20,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:20,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279035699] [2021-06-05 18:24:20,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:20,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:20,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279035699] [2021-06-05 18:24:20,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279035699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:20,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:20,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 18:24:20,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937263035] [2021-06-05 18:24:20,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 18:24:20,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:20,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 18:24:20,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 18:24:20,266 INFO L87 Difference]: Start difference. First operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:20,339 INFO L93 Difference]: Finished difference Result 3267 states and 9607 transitions. [2021-06-05 18:24:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 18:24:20,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-06-05 18:24:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:20,374 INFO L225 Difference]: With dead ends: 3267 [2021-06-05 18:24:20,374 INFO L226 Difference]: Without dead ends: 2358 [2021-06-05 18:24:20,375 INFO L810 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 [2021-06-05 18:24:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-06-05 18:24:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2358. [2021-06-05 18:24:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2356 states have (on average 2.9664685908319184) internal successors, (6989), 2357 states have internal predecessors, (6989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 6989 transitions. [2021-06-05 18:24:20,573 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 6989 transitions. Word has length 31 [2021-06-05 18:24:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:20,573 INFO L482 AbstractCegarLoop]: Abstraction has 2358 states and 6989 transitions. [2021-06-05 18:24:20,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 6989 transitions. [2021-06-05 18:24:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-05 18:24:20,576 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:20,576 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:20,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 18:24:20,576 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:20,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:20,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2126204053, now seen corresponding path program 1 times [2021-06-05 18:24:20,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:20,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50854975] [2021-06-05 18:24:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:20,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:20,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50854975] [2021-06-05 18:24:20,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50854975] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:20,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:20,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:20,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043463288] [2021-06-05 18:24:20,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:20,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:20,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:20,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:20,673 INFO L87 Difference]: Start difference. First operand 2358 states and 6989 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:20,721 INFO L93 Difference]: Finished difference Result 2253 states and 6628 transitions. [2021-06-05 18:24:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-06-05 18:24:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:20,732 INFO L225 Difference]: With dead ends: 2253 [2021-06-05 18:24:20,732 INFO L226 Difference]: Without dead ends: 1479 [2021-06-05 18:24:20,733 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-06-05 18:24:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1479. [2021-06-05 18:24:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 2.943127962085308) internal successors, (4347), 1478 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4347 transitions. [2021-06-05 18:24:20,779 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4347 transitions. Word has length 31 [2021-06-05 18:24:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:20,785 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4347 transitions. [2021-06-05 18:24:20,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4347 transitions. [2021-06-05 18:24:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:20,791 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:20,791 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:20,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 18:24:20,792 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1230815636, now seen corresponding path program 1 times [2021-06-05 18:24:20,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:20,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605889091] [2021-06-05 18:24:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:20,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:20,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605889091] [2021-06-05 18:24:20,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605889091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:20,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:20,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:20,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483160250] [2021-06-05 18:24:20,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:20,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:20,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:20,886 INFO L87 Difference]: Start difference. First operand 1479 states and 4347 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:21,007 INFO L93 Difference]: Finished difference Result 1723 states and 5033 transitions. [2021-06-05 18:24:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:21,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:21,015 INFO L225 Difference]: With dead ends: 1723 [2021-06-05 18:24:21,015 INFO L226 Difference]: Without dead ends: 1355 [2021-06-05 18:24:21,015 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2021-06-05 18:24:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1239. [2021-06-05 18:24:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 2.8803556992724335) internal successors, (3563), 1238 states have internal predecessors, (3563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3563 transitions. [2021-06-05 18:24:21,049 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3563 transitions. Word has length 48 [2021-06-05 18:24:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:21,050 INFO L482 AbstractCegarLoop]: Abstraction has 1239 states and 3563 transitions. [2021-06-05 18:24:21,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3563 transitions. [2021-06-05 18:24:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:21,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:21,054 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:21,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 18:24:21,054 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:21,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1379198464, now seen corresponding path program 2 times [2021-06-05 18:24:21,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:21,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128674392] [2021-06-05 18:24:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:21,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:21,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128674392] [2021-06-05 18:24:21,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128674392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:21,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:21,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:21,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33029252] [2021-06-05 18:24:21,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:21,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:21,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:21,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:21,124 INFO L87 Difference]: Start difference. First operand 1239 states and 3563 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:21,239 INFO L93 Difference]: Finished difference Result 1643 states and 4649 transitions. [2021-06-05 18:24:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:21,246 INFO L225 Difference]: With dead ends: 1643 [2021-06-05 18:24:21,247 INFO L226 Difference]: Without dead ends: 1535 [2021-06-05 18:24:21,247 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-06-05 18:24:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1327. [2021-06-05 18:24:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1325 states have (on average 2.8264150943396227) internal successors, (3745), 1326 states have internal predecessors, (3745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 3745 transitions. [2021-06-05 18:24:21,283 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 3745 transitions. Word has length 48 [2021-06-05 18:24:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:21,284 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 3745 transitions. [2021-06-05 18:24:21,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 3745 transitions. [2021-06-05 18:24:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:21,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:21,287 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:21,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 18:24:21,287 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:21,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2052134990, now seen corresponding path program 3 times [2021-06-05 18:24:21,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:21,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427211522] [2021-06-05 18:24:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:21,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:21,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427211522] [2021-06-05 18:24:21,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427211522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:21,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:21,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:21,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786507054] [2021-06-05 18:24:21,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:21,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:21,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:21,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:21,319 INFO L87 Difference]: Start difference. First operand 1327 states and 3745 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:21,396 INFO L93 Difference]: Finished difference Result 1904 states and 5286 transitions. [2021-06-05 18:24:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:21,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:21,405 INFO L225 Difference]: With dead ends: 1904 [2021-06-05 18:24:21,406 INFO L226 Difference]: Without dead ends: 1904 [2021-06-05 18:24:21,406 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2021-06-05 18:24:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1499. [2021-06-05 18:24:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1497 states have (on average 2.8336673346693386) internal successors, (4242), 1498 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4242 transitions. [2021-06-05 18:24:21,446 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4242 transitions. Word has length 48 [2021-06-05 18:24:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:21,446 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4242 transitions. [2021-06-05 18:24:21,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4242 transitions. [2021-06-05 18:24:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:21,450 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:21,450 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:21,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 18:24:21,451 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:21,452 INFO L82 PathProgramCache]: Analyzing trace with hash -846251270, now seen corresponding path program 4 times [2021-06-05 18:24:21,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:21,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27610385] [2021-06-05 18:24:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:21,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:21,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27610385] [2021-06-05 18:24:21,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27610385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:21,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:21,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:21,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520914519] [2021-06-05 18:24:21,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:21,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:21,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:21,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:21,498 INFO L87 Difference]: Start difference. First operand 1499 states and 4242 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:21,561 INFO L93 Difference]: Finished difference Result 1374 states and 3884 transitions. [2021-06-05 18:24:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:21,561 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 18:24:21,562 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 18:24:21,562 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 18:24:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 18:24:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 18:24:21,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-05 18:24:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:21,563 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 18:24:21,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 18:24:21,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:21,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 18:24:21,563 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (3/5) [2021-06-05 18:24:21,573 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 18:24:21,574 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:21,574 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:21,574 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:21,574 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:21,574 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:21,575 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:21,575 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:21,575 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 18:24:21,578 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-05 18:24:21,662 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:21,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:21,682 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-05 18:24:21,682 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:21,684 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:21,684 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:21,684 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:21,684 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:21,684 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:21,684 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:21,684 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:21,685 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork1======== [2021-06-05 18:24:21,686 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-05 18:24:21,766 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) [2021-06-05 18:24:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 18:24:21,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:21,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:21,776 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:21,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2102570016, now seen corresponding path program 1 times [2021-06-05 18:24:21,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:21,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769873226] [2021-06-05 18:24:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:21,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:21,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769873226] [2021-06-05 18:24:21,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769873226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:21,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:21,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 18:24:21,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353171245] [2021-06-05 18:24:21,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 18:24:21,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:21,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 18:24:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 18:24:21,803 INFO L87 Difference]: Start difference. First operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 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) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:21,823 INFO L93 Difference]: Finished difference Result 3267 states and 9607 transitions. [2021-06-05 18:24:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 18:24:21,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-06-05 18:24:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:21,835 INFO L225 Difference]: With dead ends: 3267 [2021-06-05 18:24:21,835 INFO L226 Difference]: Without dead ends: 2400 [2021-06-05 18:24:21,836 INFO L810 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 [2021-06-05 18:24:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2021-06-05 18:24:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2400. [2021-06-05 18:24:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2398 states have (on average 2.9520433694745623) internal successors, (7079), 2399 states have internal predecessors, (7079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 7079 transitions. [2021-06-05 18:24:21,893 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 7079 transitions. Word has length 37 [2021-06-05 18:24:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:21,894 INFO L482 AbstractCegarLoop]: Abstraction has 2400 states and 7079 transitions. [2021-06-05 18:24:21,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 7079 transitions. [2021-06-05 18:24:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 18:24:21,896 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:21,896 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:21,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 18:24:21,896 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1906086302, now seen corresponding path program 1 times [2021-06-05 18:24:21,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:21,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605837239] [2021-06-05 18:24:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:21,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:21,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605837239] [2021-06-05 18:24:21,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605837239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:21,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:21,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:21,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849363149] [2021-06-05 18:24:21,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:21,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:21,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:21,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:21,917 INFO L87 Difference]: Start difference. First operand 2400 states and 7079 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:21,935 INFO L93 Difference]: Finished difference Result 2307 states and 6742 transitions. [2021-06-05 18:24:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:21,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-06-05 18:24:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:21,942 INFO L225 Difference]: With dead ends: 2307 [2021-06-05 18:24:21,942 INFO L226 Difference]: Without dead ends: 1473 [2021-06-05 18:24:21,943 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-06-05 18:24:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2021-06-05 18:24:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1471 states have (on average 2.946974847042828) internal successors, (4335), 1472 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4335 transitions. [2021-06-05 18:24:21,978 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4335 transitions. Word has length 37 [2021-06-05 18:24:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:21,978 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4335 transitions. [2021-06-05 18:24:21,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4335 transitions. [2021-06-05 18:24:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:21,982 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:21,982 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:21,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 18:24:21,982 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1025458240, now seen corresponding path program 1 times [2021-06-05 18:24:21,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:21,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381875546] [2021-06-05 18:24:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:22,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:22,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381875546] [2021-06-05 18:24:22,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381875546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:22,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:22,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:22,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494611334] [2021-06-05 18:24:22,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:22,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:22,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:22,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:22,010 INFO L87 Difference]: Start difference. First operand 1473 states and 4335 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:22,084 INFO L93 Difference]: Finished difference Result 1737 states and 5068 transitions. [2021-06-05 18:24:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:22,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:22,090 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 18:24:22,090 INFO L226 Difference]: Without dead ends: 1277 [2021-06-05 18:24:22,090 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-06-05 18:24:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1161. [2021-06-05 18:24:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1159 states have (on average 2.8723037100949096) internal successors, (3329), 1160 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 3329 transitions. [2021-06-05 18:24:22,117 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 3329 transitions. Word has length 48 [2021-06-05 18:24:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:22,117 INFO L482 AbstractCegarLoop]: Abstraction has 1161 states and 3329 transitions. [2021-06-05 18:24:22,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 3329 transitions. [2021-06-05 18:24:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:22,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:22,119 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:22,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 18:24:22,120 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:22,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:22,120 INFO L82 PathProgramCache]: Analyzing trace with hash 807303894, now seen corresponding path program 2 times [2021-06-05 18:24:22,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:22,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818749013] [2021-06-05 18:24:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:22,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:22,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818749013] [2021-06-05 18:24:22,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818749013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:22,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:22,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:22,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132638455] [2021-06-05 18:24:22,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:22,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:22,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:22,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:22,146 INFO L87 Difference]: Start difference. First operand 1161 states and 3329 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:22,228 INFO L93 Difference]: Finished difference Result 1565 states and 4411 transitions. [2021-06-05 18:24:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:22,235 INFO L225 Difference]: With dead ends: 1565 [2021-06-05 18:24:22,235 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 18:24:22,236 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:22,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 18:24:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1249. [2021-06-05 18:24:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1247 states have (on average 2.8155573376102647) internal successors, (3511), 1248 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3511 transitions. [2021-06-05 18:24:22,266 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3511 transitions. Word has length 48 [2021-06-05 18:24:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:22,266 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3511 transitions. [2021-06-05 18:24:22,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3511 transitions. [2021-06-05 18:24:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:22,269 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:22,269 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:22,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 18:24:22,269 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash -56329948, now seen corresponding path program 3 times [2021-06-05 18:24:22,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:22,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482608920] [2021-06-05 18:24:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:22,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:22,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482608920] [2021-06-05 18:24:22,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482608920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:22,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:22,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:22,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769959697] [2021-06-05 18:24:22,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:22,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:22,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:22,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:22,296 INFO L87 Difference]: Start difference. First operand 1249 states and 3511 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:22,374 INFO L93 Difference]: Finished difference Result 1693 states and 4704 transitions. [2021-06-05 18:24:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:22,382 INFO L225 Difference]: With dead ends: 1693 [2021-06-05 18:24:22,383 INFO L226 Difference]: Without dead ends: 1693 [2021-06-05 18:24:22,383 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2021-06-05 18:24:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1421. [2021-06-05 18:24:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1419 states have (on average 2.824524312896406) internal successors, (4008), 1420 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4008 transitions. [2021-06-05 18:24:22,418 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4008 transitions. Word has length 48 [2021-06-05 18:24:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:22,418 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4008 transitions. [2021-06-05 18:24:22,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4008 transitions. [2021-06-05 18:24:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:22,422 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:22,422 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:22,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 18:24:22,422 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:22,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1764160840, now seen corresponding path program 4 times [2021-06-05 18:24:22,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:22,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411178299] [2021-06-05 18:24:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:24:22,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:22,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411178299] [2021-06-05 18:24:22,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411178299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:22,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:22,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:22,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972480736] [2021-06-05 18:24:22,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:22,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:22,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:22,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:22,455 INFO L87 Difference]: Start difference. First operand 1421 states and 4008 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:22,526 INFO L93 Difference]: Finished difference Result 1296 states and 3666 transitions. [2021-06-05 18:24:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:24:22,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 18:24:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:22,527 INFO L225 Difference]: With dead ends: 1296 [2021-06-05 18:24:22,527 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 18:24:22,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 18:24:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 18:24:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 18:24:22,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-05 18:24:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:22,528 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 18:24:22,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 18:24:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 18:24:22,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:22,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 18:24:22,529 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork1 was SAFE (5/5) [2021-06-05 18:24:22,529 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 18:24:22,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:24:22 BasicIcfg [2021-06-05 18:24:22,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 18:24:22,536 INFO L168 Benchmark]: Toolchain (without parser) took 4242.06 ms. Allocated memory was 358.6 MB in the beginning and 436.2 MB in the end (delta: 77.6 MB). Free memory was 321.2 MB in the beginning and 396.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:22,537 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 358.6 MB. Free memory was 339.2 MB in the beginning and 339.1 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:24:22,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.74 ms. Allocated memory is still 358.6 MB. Free memory was 321.0 MB in the beginning and 321.1 MB in the end (delta: -111.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:22,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.91 ms. Allocated memory is still 358.6 MB. Free memory was 321.1 MB in the beginning and 319.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:22,540 INFO L168 Benchmark]: Boogie Preprocessor took 46.13 ms. Allocated memory is still 358.6 MB. Free memory was 319.0 MB in the beginning and 317.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:22,540 INFO L168 Benchmark]: RCFGBuilder took 445.53 ms. Allocated memory is still 358.6 MB. Free memory was 317.6 MB in the beginning and 290.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:22,541 INFO L168 Benchmark]: TraceAbstraction took 3160.11 ms. Allocated memory was 358.6 MB in the beginning and 436.2 MB in the end (delta: 77.6 MB). Free memory was 289.7 MB in the beginning and 396.4 MB in the end (delta: -106.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:24:22,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 358.6 MB. Free memory was 339.2 MB in the beginning and 339.1 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 528.74 ms. Allocated memory is still 358.6 MB. Free memory was 321.0 MB in the beginning and 321.1 MB in the end (delta: -111.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.91 ms. Allocated memory is still 358.6 MB. Free memory was 321.1 MB in the beginning and 319.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 46.13 ms. Allocated memory is still 358.6 MB. Free memory was 319.0 MB in the beginning and 317.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 445.53 ms. Allocated memory is still 358.6 MB. Free memory was 317.6 MB in the beginning and 290.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3160.11 ms. Allocated memory was 358.6 MB in the beginning and 436.2 MB in the end (delta: 77.6 MB). Free memory was 289.7 MB in the beginning and 396.4 MB in the end (delta: -106.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 216.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 55.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 157.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 141.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 27.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 112.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1698.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 29.1ms, AutomataDifference: 597.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 132.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 683 SDtfs, 363 SDslu, 639 SDs, 0 SdLazy, 205 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 213.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 341.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 729 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 112.5ms SatisfiabilityAnalysisTime, 272.6ms InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 107.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 19.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 88.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 844.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 22.5ms, AutomataDifference: 397.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 697 SDtfs, 343 SDslu, 626 SDs, 0 SdLazy, 211 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 187.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 183.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 592 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.5ms SsaConstructionTime, 20.0ms SatisfiabilityAnalysisTime, 91.6ms InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...