/usr/bin/java -Xmx8000000000 -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/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:28:28,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:28:28,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:28:28,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 18:28:28,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 18:28:28,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 18:28:28,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 18:28:28,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 18:28:28,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 18:28:28,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 18:28:28,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 18:28:28,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 18:28:28,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 18:28:28,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 18:28:28,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 18:28:28,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 18:28:28,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 18:28:28,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 18:28:28,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 18:28:28,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 18:28:28,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 18:28:28,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 18:28:28,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 18:28:28,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 18:28:28,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-13 18:28:28,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:28:28,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:28:28,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:28:28,076 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 [2021-07-13 18:28:28,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:28:28,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:28:28,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:28:28,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:28:28,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:28:28,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:28:28,095 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:28:28,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:28:28,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:28:28,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:28:28,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:28:28,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:28:28,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:28:28,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:28:28,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:28:28,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:28:28,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:28:28,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:28:28,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:28:28,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:28:28,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:28:28,104 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:28:28,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:28:28,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:28:28,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:28:28,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:28:28,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:28:28,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:28:28,327 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:28:28,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2021-07-13 18:28:28,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c653b4f1b/2321167af6a84082a5738afe289c40ab/FLAG15b997e27 [2021-07-13 18:28:28,798 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:28:28,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2021-07-13 18:28:28,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c653b4f1b/2321167af6a84082a5738afe289c40ab/FLAG15b997e27 [2021-07-13 18:28:28,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c653b4f1b/2321167af6a84082a5738afe289c40ab [2021-07-13 18:28:28,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:28:28,818 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:28:28,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:28:28,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:28:28,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:28:28,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:28:28" (1/1) ... [2021-07-13 18:28:28,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2849df30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:28, skipping insertion in model container [2021-07-13 18:28:28,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:28:28" (1/1) ... [2021-07-13 18:28:28,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:28:28,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:28:28,973 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 18:28:29,106 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/lamport.i[32156,32169] [2021-07-13 18:28:29,113 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/lamport.i[34083,34096] [2021-07-13 18:28:29,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:28:29,125 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:28:29,140 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 18:28:29,157 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/lamport.i[32156,32169] [2021-07-13 18:28:29,160 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/lamport.i[34083,34096] [2021-07-13 18:28:29,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:28:29,188 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:28:29,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29 WrapperNode [2021-07-13 18:28:29,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:28:29,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:28:29,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:28:29,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:28:29,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:28:29,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:28:29,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:28:29,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:28:29,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (1/1) ... [2021-07-13 18:28:29,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:28:29,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:28:29,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:28:29,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:28:29,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (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 [2021-07-13 18:28:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 18:28:29,333 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-07-13 18:28:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-07-13 18:28:29,333 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-13 18:28:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:28:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:28:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:28:29,335 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:28:29,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:28:29,755 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-13 18:28:29,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:28:29 BoogieIcfgContainer [2021-07-13 18:28:29,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:28:29,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:28:29,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:28:29,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:28:29,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:28:28" (1/3) ... [2021-07-13 18:28:29,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f2af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:28:29, skipping insertion in model container [2021-07-13 18:28:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:29" (2/3) ... [2021-07-13 18:28:29,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f2af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:28:29, skipping insertion in model container [2021-07-13 18:28:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:28:29" (3/3) ... [2021-07-13 18:28:29,763 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-07-13 18:28:29,768 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:28:29,768 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:28:29,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-13 18:28:29,768 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:28:29,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:28:29,857 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 18:28:29,872 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 18:28:29,891 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:28:29,891 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:28:29,891 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:28:29,891 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:28:29,891 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:28:29,891 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:28:29,891 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:28:29,892 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork1======== [2021-07-13 18:28:29,901 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 131 transitions, 284 flow [2021-07-13 18:28:30,010 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3719 states, 3717 states have (on average 3.3812214151197204) internal successors, (12568), 3718 states have internal predecessors, (12568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 3719 states, 3717 states have (on average 3.3812214151197204) internal successors, (12568), 3718 states have internal predecessors, (12568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-13 18:28:30,027 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:30,027 INFO L508 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] [2021-07-13 18:28:30,028 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:30,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1915636410, now seen corresponding path program 1 times [2021-07-13 18:28:30,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:30,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857089304] [2021-07-13 18:28:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:30,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:30,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857089304] [2021-07-13 18:28:30,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857089304] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:30,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:30,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 18:28:30,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229711070] [2021-07-13 18:28:30,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 18:28:30,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:30,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 18:28:30,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 18:28:30,174 INFO L87 Difference]: Start difference. First operand has 3719 states, 3717 states have (on average 3.3812214151197204) internal successors, (12568), 3718 states have internal predecessors, (12568), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:30,228 INFO L93 Difference]: Finished difference Result 3719 states and 11235 transitions. [2021-07-13 18:28:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 18:28:30,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-07-13 18:28:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:30,257 INFO L225 Difference]: With dead ends: 3719 [2021-07-13 18:28:30,257 INFO L226 Difference]: Without dead ends: 3719 [2021-07-13 18:28:30,258 INFO L764 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 [2021-07-13 18:28:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-07-13 18:28:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3719. [2021-07-13 18:28:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3719 states, 3717 states have (on average 3.022598870056497) internal successors, (11235), 3718 states have internal predecessors, (11235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 11235 transitions. [2021-07-13 18:28:30,403 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 11235 transitions. Word has length 25 [2021-07-13 18:28:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:30,403 INFO L482 AbstractCegarLoop]: Abstraction has 3719 states and 11235 transitions. [2021-07-13 18:28:30,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 11235 transitions. [2021-07-13 18:28:30,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-13 18:28:30,405 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:30,405 INFO L508 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] [2021-07-13 18:28:30,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:28:30,405 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:30,406 INFO L82 PathProgramCache]: Analyzing trace with hash -977585031, now seen corresponding path program 1 times [2021-07-13 18:28:30,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:30,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13627677] [2021-07-13 18:28:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:30,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:30,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13627677] [2021-07-13 18:28:30,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13627677] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:30,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:30,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:28:30,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810506862] [2021-07-13 18:28:30,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:28:30,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:30,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:28:30,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:28:30,519 INFO L87 Difference]: Start difference. First operand 3719 states and 11235 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:30,570 INFO L93 Difference]: Finished difference Result 3550 states and 10686 transitions. [2021-07-13 18:28:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:28:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-07-13 18:28:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:30,589 INFO L225 Difference]: With dead ends: 3550 [2021-07-13 18:28:30,589 INFO L226 Difference]: Without dead ends: 2675 [2021-07-13 18:28:30,590 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:28:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-07-13 18:28:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2675. [2021-07-13 18:28:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 3.0561167227833894) internal successors, (8169), 2674 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 8169 transitions. [2021-07-13 18:28:30,669 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 8169 transitions. Word has length 33 [2021-07-13 18:28:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:30,669 INFO L482 AbstractCegarLoop]: Abstraction has 2675 states and 8169 transitions. [2021-07-13 18:28:30,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 8169 transitions. [2021-07-13 18:28:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:30,680 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:30,680 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:30,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:28:30,681 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:30,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash -261404181, now seen corresponding path program 1 times [2021-07-13 18:28:30,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:30,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202832496] [2021-07-13 18:28:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:30,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:30,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202832496] [2021-07-13 18:28:30,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202832496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:30,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:30,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:30,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551286749] [2021-07-13 18:28:30,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:30,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:30,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:30,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:30,746 INFO L87 Difference]: Start difference. First operand 2675 states and 8169 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:30,898 INFO L93 Difference]: Finished difference Result 5619 states and 17349 transitions. [2021-07-13 18:28:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:30,914 INFO L225 Difference]: With dead ends: 5619 [2021-07-13 18:28:30,914 INFO L226 Difference]: Without dead ends: 3243 [2021-07-13 18:28:30,915 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2021-07-13 18:28:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 2931. [2021-07-13 18:28:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2929 states have (on average 3.0238989416182998) internal successors, (8857), 2930 states have internal predecessors, (8857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 8857 transitions. [2021-07-13 18:28:31,024 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 8857 transitions. Word has length 50 [2021-07-13 18:28:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:31,025 INFO L482 AbstractCegarLoop]: Abstraction has 2931 states and 8857 transitions. [2021-07-13 18:28:31,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 8857 transitions. [2021-07-13 18:28:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:31,029 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:31,029 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:31,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:28:31,029 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:31,030 INFO L82 PathProgramCache]: Analyzing trace with hash -288204437, now seen corresponding path program 2 times [2021-07-13 18:28:31,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:31,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454373762] [2021-07-13 18:28:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:31,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:31,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454373762] [2021-07-13 18:28:31,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454373762] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:31,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:31,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:31,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218848744] [2021-07-13 18:28:31,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:31,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:31,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:31,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:31,065 INFO L87 Difference]: Start difference. First operand 2931 states and 8857 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:31,145 INFO L93 Difference]: Finished difference Result 8363 states and 25490 transitions. [2021-07-13 18:28:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 18:28:31,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:31,184 INFO L225 Difference]: With dead ends: 8363 [2021-07-13 18:28:31,184 INFO L226 Difference]: Without dead ends: 8363 [2021-07-13 18:28:31,185 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2021-07-13 18:28:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 3279. [2021-07-13 18:28:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3277 states have (on average 3.0241074153188894) internal successors, (9910), 3278 states have internal predecessors, (9910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 9910 transitions. [2021-07-13 18:28:31,334 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 9910 transitions. Word has length 50 [2021-07-13 18:28:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:31,334 INFO L482 AbstractCegarLoop]: Abstraction has 3279 states and 9910 transitions. [2021-07-13 18:28:31,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 9910 transitions. [2021-07-13 18:28:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:31,339 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:31,339 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:31,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:28:31,339 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:31,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:31,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1400990695, now seen corresponding path program 3 times [2021-07-13 18:28:31,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:31,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265501388] [2021-07-13 18:28:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:31,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:31,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265501388] [2021-07-13 18:28:31,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265501388] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:31,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:31,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:31,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13801991] [2021-07-13 18:28:31,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:31,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:31,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:31,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:31,380 INFO L87 Difference]: Start difference. First operand 3279 states and 9910 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:31,454 INFO L93 Difference]: Finished difference Result 7829 states and 23559 transitions. [2021-07-13 18:28:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 18:28:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:31,482 INFO L225 Difference]: With dead ends: 7829 [2021-07-13 18:28:31,482 INFO L226 Difference]: Without dead ends: 7565 [2021-07-13 18:28:31,483 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7565 states. [2021-07-13 18:28:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7565 to 3579. [2021-07-13 18:28:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3577 states have (on average 3.0201285993849596) internal successors, (10803), 3578 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 10803 transitions. [2021-07-13 18:28:31,642 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 10803 transitions. Word has length 50 [2021-07-13 18:28:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:31,642 INFO L482 AbstractCegarLoop]: Abstraction has 3579 states and 10803 transitions. [2021-07-13 18:28:31,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 10803 transitions. [2021-07-13 18:28:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:31,649 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:31,649 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:31,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:28:31,649 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:31,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:31,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2031652929, now seen corresponding path program 4 times [2021-07-13 18:28:31,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:31,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560585750] [2021-07-13 18:28:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:31,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:31,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560585750] [2021-07-13 18:28:31,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560585750] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:31,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:31,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:31,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209228971] [2021-07-13 18:28:31,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:31,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:31,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:31,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:31,704 INFO L87 Difference]: Start difference. First operand 3579 states and 10803 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:31,799 INFO L93 Difference]: Finished difference Result 5407 states and 16081 transitions. [2021-07-13 18:28:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:31,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:31,806 INFO L225 Difference]: With dead ends: 5407 [2021-07-13 18:28:31,807 INFO L226 Difference]: Without dead ends: 2257 [2021-07-13 18:28:31,807 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-07-13 18:28:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2029. [2021-07-13 18:28:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 2027 states have (on average 2.7168228909718795) internal successors, (5507), 2028 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 5507 transitions. [2021-07-13 18:28:31,852 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 5507 transitions. Word has length 50 [2021-07-13 18:28:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:31,852 INFO L482 AbstractCegarLoop]: Abstraction has 2029 states and 5507 transitions. [2021-07-13 18:28:31,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 5507 transitions. [2021-07-13 18:28:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:28:31,856 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:31,857 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:31,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:28:31,857 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:31,857 INFO L82 PathProgramCache]: Analyzing trace with hash -182745444, now seen corresponding path program 1 times [2021-07-13 18:28:31,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:31,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489006525] [2021-07-13 18:28:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:31,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:31,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489006525] [2021-07-13 18:28:31,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489006525] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:31,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:31,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:31,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831284821] [2021-07-13 18:28:31,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:31,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:31,931 INFO L87 Difference]: Start difference. First operand 2029 states and 5507 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:31,967 INFO L93 Difference]: Finished difference Result 1906 states and 5003 transitions. [2021-07-13 18:28:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:28:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:31,971 INFO L225 Difference]: With dead ends: 1906 [2021-07-13 18:28:31,971 INFO L226 Difference]: Without dead ends: 1714 [2021-07-13 18:28:31,971 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-07-13 18:28:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1593. [2021-07-13 18:28:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1591 states have (on average 2.6700188560653677) internal successors, (4248), 1592 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 4248 transitions. [2021-07-13 18:28:31,998 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 4248 transitions. Word has length 55 [2021-07-13 18:28:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:31,998 INFO L482 AbstractCegarLoop]: Abstraction has 1593 states and 4248 transitions. [2021-07-13 18:28:31,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 4248 transitions. [2021-07-13 18:28:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:28:32,000 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:32,001 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:32,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:28:32,001 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash 541407625, now seen corresponding path program 1 times [2021-07-13 18:28:32,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:32,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824457137] [2021-07-13 18:28:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:32,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:32,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824457137] [2021-07-13 18:28:32,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824457137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:32,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:32,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:32,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650095373] [2021-07-13 18:28:32,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:32,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:32,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:32,027 INFO L87 Difference]: Start difference. First operand 1593 states and 4248 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:32,045 INFO L93 Difference]: Finished difference Result 896 states and 2421 transitions. [2021-07-13 18:28:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:28:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:32,046 INFO L225 Difference]: With dead ends: 896 [2021-07-13 18:28:32,046 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:28:32,046 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:28:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:28:32,047 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) [2021-07-13 18:28:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:28:32,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-07-13 18:28:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:32,047 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:28:32,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:28:32,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:28:32,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:28:32,048 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/3) [2021-07-13 18:28:32,049 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-13 18:28:32,051 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:28:32,051 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:28:32,051 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:28:32,051 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:28:32,051 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:28:32,051 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:28:32,051 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:28:32,051 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:28:32,055 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 131 transitions, 284 flow [2021-07-13 18:28:32,060 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 212 states, 210 states have (on average 2.085714285714286) internal successors, (438), 211 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 210 states have (on average 2.085714285714286) internal successors, (438), 211 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:28:32,061 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-07-13 18:28:32,061 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 18:28:32,062 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:28:32,062 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:28:32,062 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:28:32,062 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:28:32,062 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:28:32,062 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:28:32,062 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:28:32,062 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork0======== [2021-07-13 18:28:32,066 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 131 transitions, 284 flow [2021-07-13 18:28:32,110 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3749 states, 3747 states have (on average 3.3717640779290097) internal successors, (12634), 3748 states have internal predecessors, (12634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 3749 states, 3747 states have (on average 3.3717640779290097) internal successors, (12634), 3748 states have internal predecessors, (12634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-13 18:28:32,118 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:32,119 INFO L508 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] [2021-07-13 18:28:32,119 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:32,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1479514535, now seen corresponding path program 1 times [2021-07-13 18:28:32,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:32,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272604189] [2021-07-13 18:28:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:32,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:32,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272604189] [2021-07-13 18:28:32,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272604189] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:32,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:32,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 18:28:32,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615960111] [2021-07-13 18:28:32,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 18:28:32,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:32,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 18:28:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 18:28:32,158 INFO L87 Difference]: Start difference. First operand has 3749 states, 3747 states have (on average 3.3717640779290097) internal successors, (12634), 3748 states have internal predecessors, (12634), 0 states have call successors, (0), 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) [2021-07-13 18:28:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:32,181 INFO L93 Difference]: Finished difference Result 3749 states and 11295 transitions. [2021-07-13 18:28:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 18:28:32,181 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 [2021-07-13 18:28:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:32,190 INFO L225 Difference]: With dead ends: 3749 [2021-07-13 18:28:32,190 INFO L226 Difference]: Without dead ends: 3749 [2021-07-13 18:28:32,191 INFO L764 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 [2021-07-13 18:28:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2021-07-13 18:28:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3749. [2021-07-13 18:28:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3747 states have (on average 3.014411529223379) internal successors, (11295), 3748 states have internal predecessors, (11295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 11295 transitions. [2021-07-13 18:28:32,281 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 11295 transitions. Word has length 31 [2021-07-13 18:28:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:32,281 INFO L482 AbstractCegarLoop]: Abstraction has 3749 states and 11295 transitions. [2021-07-13 18:28:32,282 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) [2021-07-13 18:28:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 11295 transitions. [2021-07-13 18:28:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 18:28:32,283 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:32,283 INFO L508 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] [2021-07-13 18:28:32,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:28:32,284 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:32,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1653746266, now seen corresponding path program 1 times [2021-07-13 18:28:32,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:32,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763096602] [2021-07-13 18:28:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:32,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:32,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763096602] [2021-07-13 18:28:32,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763096602] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:32,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:32,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:28:32,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29743171] [2021-07-13 18:28:32,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:28:32,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:32,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:28:32,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:28:32,339 INFO L87 Difference]: Start difference. First operand 3749 states and 11295 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:32,360 INFO L93 Difference]: Finished difference Result 3592 states and 10770 transitions. [2021-07-13 18:28:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:28:32,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 18:28:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:32,367 INFO L225 Difference]: With dead ends: 3592 [2021-07-13 18:28:32,367 INFO L226 Difference]: Without dead ends: 2669 [2021-07-13 18:28:32,368 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:28:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-07-13 18:28:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2669. [2021-07-13 18:28:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2667 states have (on average 3.0584926884139483) internal successors, (8157), 2668 states have internal predecessors, (8157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 8157 transitions. [2021-07-13 18:28:32,425 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 8157 transitions. Word has length 39 [2021-07-13 18:28:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:32,425 INFO L482 AbstractCegarLoop]: Abstraction has 2669 states and 8157 transitions. [2021-07-13 18:28:32,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 8157 transitions. [2021-07-13 18:28:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:32,429 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:32,430 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:32,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:28:32,430 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1658764785, now seen corresponding path program 1 times [2021-07-13 18:28:32,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:32,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20075424] [2021-07-13 18:28:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:32,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:32,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20075424] [2021-07-13 18:28:32,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20075424] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:32,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:32,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:32,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870548037] [2021-07-13 18:28:32,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:32,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:32,459 INFO L87 Difference]: Start difference. First operand 2669 states and 8157 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:32,549 INFO L93 Difference]: Finished difference Result 5649 states and 17436 transitions. [2021-07-13 18:28:32,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:32,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:32,558 INFO L225 Difference]: With dead ends: 5649 [2021-07-13 18:28:32,558 INFO L226 Difference]: Without dead ends: 3165 [2021-07-13 18:28:32,559 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2021-07-13 18:28:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2933. [2021-07-13 18:28:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2931 states have (on average 3.025247355851245) internal successors, (8867), 2932 states have internal predecessors, (8867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 8867 transitions. [2021-07-13 18:28:32,619 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 8867 transitions. Word has length 50 [2021-07-13 18:28:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:32,619 INFO L482 AbstractCegarLoop]: Abstraction has 2933 states and 8867 transitions. [2021-07-13 18:28:32,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 8867 transitions. [2021-07-13 18:28:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:32,623 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:32,623 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:32,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 18:28:32,623 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:32,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1631964529, now seen corresponding path program 2 times [2021-07-13 18:28:32,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:32,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043390376] [2021-07-13 18:28:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:32,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:32,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043390376] [2021-07-13 18:28:32,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043390376] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:32,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:32,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:32,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259494999] [2021-07-13 18:28:32,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:32,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:32,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:32,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:32,660 INFO L87 Difference]: Start difference. First operand 2933 states and 8867 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:32,716 INFO L93 Difference]: Finished difference Result 8313 states and 25345 transitions. [2021-07-13 18:28:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 18:28:32,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:32,742 INFO L225 Difference]: With dead ends: 8313 [2021-07-13 18:28:32,742 INFO L226 Difference]: Without dead ends: 8313 [2021-07-13 18:28:32,742 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2021-07-13 18:28:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 3261. [2021-07-13 18:28:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 3259 states have (on average 3.0257747775391226) internal successors, (9861), 3260 states have internal predecessors, (9861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 9861 transitions. [2021-07-13 18:28:32,866 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 9861 transitions. Word has length 50 [2021-07-13 18:28:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:32,866 INFO L482 AbstractCegarLoop]: Abstraction has 3261 states and 9861 transitions. [2021-07-13 18:28:32,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 9861 transitions. [2021-07-13 18:28:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:32,871 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:32,871 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:32,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 18:28:32,872 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash 519178271, now seen corresponding path program 3 times [2021-07-13 18:28:32,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:32,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502703646] [2021-07-13 18:28:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:32,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:32,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502703646] [2021-07-13 18:28:32,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502703646] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:32,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:32,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:32,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719828215] [2021-07-13 18:28:32,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:32,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:32,935 INFO L87 Difference]: Start difference. First operand 3261 states and 9861 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:33,007 INFO L93 Difference]: Finished difference Result 7811 states and 23482 transitions. [2021-07-13 18:28:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 18:28:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:33,030 INFO L225 Difference]: With dead ends: 7811 [2021-07-13 18:28:33,030 INFO L226 Difference]: Without dead ends: 7535 [2021-07-13 18:28:33,030 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2021-07-13 18:28:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 3577. [2021-07-13 18:28:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3575 states have (on average 3.0204195804195804) internal successors, (10798), 3576 states have internal predecessors, (10798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 10798 transitions. [2021-07-13 18:28:33,139 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 10798 transitions. Word has length 50 [2021-07-13 18:28:33,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:33,140 INFO L482 AbstractCegarLoop]: Abstraction has 3577 states and 10798 transitions. [2021-07-13 18:28:33,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 10798 transitions. [2021-07-13 18:28:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:28:33,145 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:33,145 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:33,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 18:28:33,145 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1856758831, now seen corresponding path program 4 times [2021-07-13 18:28:33,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:33,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852002607] [2021-07-13 18:28:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:33,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:33,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852002607] [2021-07-13 18:28:33,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852002607] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:33,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:33,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:33,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203792911] [2021-07-13 18:28:33,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:33,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:33,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:33,171 INFO L87 Difference]: Start difference. First operand 3577 states and 10798 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:33,279 INFO L93 Difference]: Finished difference Result 5277 states and 15700 transitions. [2021-07-13 18:28:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-07-13 18:28:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:33,285 INFO L225 Difference]: With dead ends: 5277 [2021-07-13 18:28:33,286 INFO L226 Difference]: Without dead ends: 2257 [2021-07-13 18:28:33,286 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-07-13 18:28:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2029. [2021-07-13 18:28:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 2027 states have (on average 2.7168228909718795) internal successors, (5507), 2028 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 5507 transitions. [2021-07-13 18:28:33,347 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 5507 transitions. Word has length 50 [2021-07-13 18:28:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:33,347 INFO L482 AbstractCegarLoop]: Abstraction has 2029 states and 5507 transitions. [2021-07-13 18:28:33,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 5507 transitions. [2021-07-13 18:28:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:28:33,350 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:33,351 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:33,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 18:28:33,351 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423522, now seen corresponding path program 1 times [2021-07-13 18:28:33,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:33,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399049911] [2021-07-13 18:28:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:33,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:33,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399049911] [2021-07-13 18:28:33,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399049911] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:33,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:33,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:33,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797439212] [2021-07-13 18:28:33,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:33,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:33,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:33,371 INFO L87 Difference]: Start difference. First operand 2029 states and 5507 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:33,437 INFO L93 Difference]: Finished difference Result 1817 states and 4792 transitions. [2021-07-13 18:28:33,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:33,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:28:33,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:33,441 INFO L225 Difference]: With dead ends: 1817 [2021-07-13 18:28:33,441 INFO L226 Difference]: Without dead ends: 1657 [2021-07-13 18:28:33,443 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-07-13 18:28:33,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1585. [2021-07-13 18:28:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 2.669614655716993) internal successors, (4226), 1584 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 4226 transitions. [2021-07-13 18:28:33,467 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 4226 transitions. Word has length 55 [2021-07-13 18:28:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:33,467 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 4226 transitions. [2021-07-13 18:28:33,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 4226 transitions. [2021-07-13 18:28:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:28:33,472 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:28:33,472 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:28:33,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 18:28:33,472 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:28:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:28:33,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1749463747, now seen corresponding path program 1 times [2021-07-13 18:28:33,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:28:33,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846485504] [2021-07-13 18:28:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:28:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:28:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:28:33,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:28:33,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846485504] [2021-07-13 18:28:33,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846485504] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:28:33,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:28:33,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:28:33,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889142223] [2021-07-13 18:28:33,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:28:33,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:28:33,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:28:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:28:33,503 INFO L87 Difference]: Start difference. First operand 1585 states and 4226 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:28:33,516 INFO L93 Difference]: Finished difference Result 928 states and 2509 transitions. [2021-07-13 18:28:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:28:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:28:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:28:33,517 INFO L225 Difference]: With dead ends: 928 [2021-07-13 18:28:33,517 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:28:33,517 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:28:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:28:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:28:33,517 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) [2021-07-13 18:28:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:28:33,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-07-13 18:28:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:28:33,518 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:28:33,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:28:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:28:33,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:28:33,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 18:28:33,518 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork0 was SAFE (3/3) [2021-07-13 18:28:33,518 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:28:33,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:28:33 BasicIcfg [2021-07-13 18:28:33,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:28:33,523 INFO L168 Benchmark]: Toolchain (without parser) took 4704.98 ms. Allocated memory was 210.8 MB in the beginning and 481.3 MB in the end (delta: 270.5 MB). Free memory was 173.6 MB in the beginning and 160.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 285.5 MB. Max. memory is 8.0 GB. [2021-07-13 18:28:33,523 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 210.8 MB. Free memory was 191.9 MB in the beginning and 191.8 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:28:33,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.34 ms. Allocated memory is still 210.8 MB. Free memory was 173.4 MB in the beginning and 183.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 18:28:33,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.05 ms. Allocated memory is still 210.8 MB. Free memory was 183.5 MB in the beginning and 181.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:28:33,526 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 ms. Allocated memory is still 210.8 MB. Free memory was 181.8 MB in the beginning and 180.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:28:33,526 INFO L168 Benchmark]: RCFGBuilder took 491.65 ms. Allocated memory is still 210.8 MB. Free memory was 180.1 MB in the beginning and 152.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-07-13 18:28:33,526 INFO L168 Benchmark]: TraceAbstraction took 3763.22 ms. Allocated memory was 210.8 MB in the beginning and 481.3 MB in the end (delta: 270.5 MB). Free memory was 152.0 MB in the beginning and 160.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 263.8 MB. Max. memory is 8.0 GB. [2021-07-13 18:28:33,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 210.8 MB. Free memory was 191.9 MB in the beginning and 191.8 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 370.34 ms. Allocated memory is still 210.8 MB. Free memory was 173.4 MB in the beginning and 183.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.05 ms. Allocated memory is still 210.8 MB. Free memory was 183.5 MB in the beginning and 181.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.11 ms. Allocated memory is still 210.8 MB. Free memory was 181.8 MB in the beginning and 180.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 491.65 ms. Allocated memory is still 210.8 MB. Free memory was 180.1 MB in the beginning and 152.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3763.22 ms. Allocated memory was 210.8 MB in the beginning and 481.3 MB in the end (delta: 270.5 MB). Free memory was 152.0 MB in the beginning and 160.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 263.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 834]: 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: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2158.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 48.8ms, AutomataDifference: 731.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 118.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1163 SDtfs, 738 SDslu, 1347 SDs, 0 SdLazy, 205 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 188.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3719occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 702.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 9731 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.0ms SsaConstructionTime, 96.9ms SatisfiabilityAnalysisTime, 233.9ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 472 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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, 172 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred 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: thr2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1456.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 33.9ms, AutomataDifference: 550.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 48.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1191 SDtfs, 689 SDslu, 1385 SDs, 0 SdLazy, 209 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3749occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 524.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 9542 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.2ms SsaConstructionTime, 30.7ms SatisfiabilityAnalysisTime, 205.0ms InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...