/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 21:53:42,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 21:53:42,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 21:53:42,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 21:53:42,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 21:53:42,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 21:53:42,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 21:53:42,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 21:53:42,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 21:53:42,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 21:53:42,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 21:53:42,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 21:53:42,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 21:53:42,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 21:53:42,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 21:53:42,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 21:53:42,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 21:53:42,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 21:53:42,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 21:53:42,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 21:53:42,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 21:53:42,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 21:53:42,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 21:53:42,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 21:53:42,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 21:53:42,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 21:53:42,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 21:53:42,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 21:53:42,180 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-Delay.epf [2021-07-09 21:53:42,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 21:53:42,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 21:53:42,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 21:53:42,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 21:53:42,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 21:53:42,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 21:53:42,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 21:53:42,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:53:42,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 21:53:42,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 21:53:42,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 21:53:42,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 21:53:42,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 21:53:42,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 21:53:42,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 21:53:42,212 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 21:53:42,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 21:53:42,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 21:53:42,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 21:53:42,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 21:53:42,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 21:53:42,466 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 21:53:42,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-07-09 21:53:42,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375e10126/0a2b9fb63985450193c4ce68bd75b903/FLAG7b8fb22bb [2021-07-09 21:53:42,901 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 21:53:42,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-07-09 21:53:42,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375e10126/0a2b9fb63985450193c4ce68bd75b903/FLAG7b8fb22bb [2021-07-09 21:53:42,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375e10126/0a2b9fb63985450193c4ce68bd75b903 [2021-07-09 21:53:42,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 21:53:42,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 21:53:42,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 21:53:42,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 21:53:42,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 21:53:42,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 09:53:42" (1/1) ... [2021-07-09 21:53:42,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9fe214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:42, skipping insertion in model container [2021-07-09 21:53:42,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 09:53:42" (1/1) ... [2021-07-09 21:53:42,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 21:53:42,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 21:53:43,156 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-09 21:53:43,273 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-07-09 21:53:43,278 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-07-09 21:53:43,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 21:53:43,295 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 21:53:43,320 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-09 21:53:43,335 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-07-09 21:53:43,337 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-07-09 21:53:43,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 21:53:43,369 INFO L208 MainTranslator]: Completed translation [2021-07-09 21:53:43,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43 WrapperNode [2021-07-09 21:53:43,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 21:53:43,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 21:53:43,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 21:53:43,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 21:53:43,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 21:53:43,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 21:53:43,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 21:53:43,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 21:53:43,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (1/1) ... [2021-07-09 21:53:43,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 21:53:43,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 21:53:43,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 21:53:43,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 21:53:43,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (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 [2021-07-09 21:53:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-07-09 21:53:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-09 21:53:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 21:53:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 21:53:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 21:53:43,487 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 21:53:43,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 21:53:43,828 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-09 21:53:43,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:53:43 BoogieIcfgContainer [2021-07-09 21:53:43,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 21:53:43,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 21:53:43,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 21:53:43,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 21:53:43,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 09:53:42" (1/3) ... [2021-07-09 21:53:43,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1fe597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:53:43, skipping insertion in model container [2021-07-09 21:53:43,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:43" (2/3) ... [2021-07-09 21:53:43,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1fe597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:53:43, skipping insertion in model container [2021-07-09 21:53:43,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:53:43" (3/3) ... [2021-07-09 21:53:43,835 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-07-09 21:53:43,841 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 21:53:43,842 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 21:53:43,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-09 21:53:43,842 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 21:53:43,871 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,873 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,883 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,894 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,906 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,906 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,907 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,907 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,907 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:43,917 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-09 21:53:43,934 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 21:53:43,951 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:53:43,952 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:53:43,952 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:53:43,952 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:53:43,952 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:53:43,952 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:53:43,952 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:53:43,952 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-07-09 21:53:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 2358 states, 2198 states have (on average 1.8908098271155596) internal successors, (4156), 2357 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 21:53:44,269 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:44,269 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] [2021-07-09 21:53:44,269 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1929720339, now seen corresponding path program 1 times [2021-07-09 21:53:44,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:44,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715176536] [2021-07-09 21:53:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:44,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:44,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:44,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:44,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715176536] [2021-07-09 21:53:44,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715176536] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:44,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:44,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 21:53:44,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137610646] [2021-07-09 21:53:44,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 21:53:44,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:44,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 21:53:44,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 21:53:44,416 INFO L87 Difference]: Start difference. First operand has 2358 states, 2198 states have (on average 1.8908098271155596) internal successors, (4156), 2357 states have internal predecessors, (4156), 0 states have call successors, (0), 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) [2021-07-09 21:53:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:44,452 INFO L93 Difference]: Finished difference Result 2358 states and 3633 transitions. [2021-07-09 21:53:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:53:44,453 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 [2021-07-09 21:53:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:44,472 INFO L225 Difference]: With dead ends: 2358 [2021-07-09 21:53:44,472 INFO L226 Difference]: Without dead ends: 1892 [2021-07-09 21:53:44,473 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 [2021-07-09 21:53:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-07-09 21:53:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2021-07-09 21:53:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1884 states have (on average 1.6703821656050954) internal successors, (3147), 1891 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 3147 transitions. [2021-07-09 21:53:44,575 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 3147 transitions. Word has length 31 [2021-07-09 21:53:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:44,575 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 3147 transitions. [2021-07-09 21:53:44,576 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) [2021-07-09 21:53:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 3147 transitions. [2021-07-09 21:53:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-09 21:53:44,583 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:44,583 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] [2021-07-09 21:53:44,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 21:53:44,583 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:44,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2126204053, now seen corresponding path program 1 times [2021-07-09 21:53:44,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:44,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631769158] [2021-07-09 21:53:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:44,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:44,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:44,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:44,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:44,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631769158] [2021-07-09 21:53:44,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631769158] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:44,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:44,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:44,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530188290] [2021-07-09 21:53:44,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:44,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:44,687 INFO L87 Difference]: Start difference. First operand 1892 states and 3147 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:44,716 INFO L93 Difference]: Finished difference Result 1764 states and 2911 transitions. [2021-07-09 21:53:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-07-09 21:53:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:44,722 INFO L225 Difference]: With dead ends: 1764 [2021-07-09 21:53:44,723 INFO L226 Difference]: Without dead ends: 1304 [2021-07-09 21:53:44,723 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-07-09 21:53:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2021-07-09 21:53:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1296 states have (on average 1.7214506172839505) internal successors, (2231), 1303 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 2231 transitions. [2021-07-09 21:53:44,752 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 2231 transitions. Word has length 31 [2021-07-09 21:53:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:44,752 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 2231 transitions. [2021-07-09 21:53:44,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 2231 transitions. [2021-07-09 21:53:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:44,756 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:44,757 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] [2021-07-09 21:53:44,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 21:53:44,757 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:44,763 INFO L82 PathProgramCache]: Analyzing trace with hash -178883416, now seen corresponding path program 1 times [2021-07-09 21:53:44,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:44,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956981784] [2021-07-09 21:53:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:44,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:44,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:44,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:44,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:44,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:44,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:44,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956981784] [2021-07-09 21:53:44,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956981784] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:44,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:44,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:44,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678339805] [2021-07-09 21:53:44,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:44,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:44,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:44,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:44,831 INFO L87 Difference]: Start difference. First operand 1304 states and 2231 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:44,913 INFO L93 Difference]: Finished difference Result 1516 states and 2587 transitions. [2021-07-09 21:53:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:44,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:44,918 INFO L225 Difference]: With dead ends: 1516 [2021-07-09 21:53:44,918 INFO L226 Difference]: Without dead ends: 1188 [2021-07-09 21:53:44,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-07-09 21:53:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1080. [2021-07-09 21:53:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1072 states have (on average 1.6371268656716418) internal successors, (1755), 1079 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1755 transitions. [2021-07-09 21:53:44,936 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1755 transitions. Word has length 48 [2021-07-09 21:53:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:44,937 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 1755 transitions. [2021-07-09 21:53:44,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1755 transitions. [2021-07-09 21:53:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:44,939 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:44,939 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] [2021-07-09 21:53:44,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 21:53:44,940 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:44,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash -645860712, now seen corresponding path program 2 times [2021-07-09 21:53:44,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:44,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982573597] [2021-07-09 21:53:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:44,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982573597] [2021-07-09 21:53:45,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982573597] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:45,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092202692] [2021-07-09 21:53:45,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:45,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:45,014 INFO L87 Difference]: Start difference. First operand 1080 states and 1755 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,086 INFO L93 Difference]: Finished difference Result 1364 states and 2223 transitions. [2021-07-09 21:53:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:45,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,090 INFO L225 Difference]: With dead ends: 1364 [2021-07-09 21:53:45,090 INFO L226 Difference]: Without dead ends: 1344 [2021-07-09 21:53:45,091 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:45,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-07-09 21:53:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1152. [2021-07-09 21:53:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1144 states have (on average 1.638986013986014) internal successors, (1875), 1151 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1875 transitions. [2021-07-09 21:53:45,118 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1875 transitions. Word has length 48 [2021-07-09 21:53:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:45,118 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 1875 transitions. [2021-07-09 21:53:45,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1875 transitions. [2021-07-09 21:53:45,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:45,120 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:45,121 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] [2021-07-09 21:53:45,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 21:53:45,121 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:45,121 INFO L82 PathProgramCache]: Analyzing trace with hash 518026408, now seen corresponding path program 3 times [2021-07-09 21:53:45,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:45,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695333995] [2021-07-09 21:53:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:45,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695333995] [2021-07-09 21:53:45,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695333995] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:45,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578818426] [2021-07-09 21:53:45,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:45,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:45,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:45,159 INFO L87 Difference]: Start difference. First operand 1152 states and 1875 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,254 INFO L93 Difference]: Finished difference Result 1655 states and 2674 transitions. [2021-07-09 21:53:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,259 INFO L225 Difference]: With dead ends: 1655 [2021-07-09 21:53:45,259 INFO L226 Difference]: Without dead ends: 1655 [2021-07-09 21:53:45,259 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-07-09 21:53:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1312. [2021-07-09 21:53:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1304 states have (on average 1.6526073619631902) internal successors, (2155), 1311 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2155 transitions. [2021-07-09 21:53:45,307 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2155 transitions. Word has length 48 [2021-07-09 21:53:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:45,307 INFO L482 AbstractCegarLoop]: Abstraction has 1312 states and 2155 transitions. [2021-07-09 21:53:45,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2155 transitions. [2021-07-09 21:53:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:45,310 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:45,310 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] [2021-07-09 21:53:45,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 21:53:45,310 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:45,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1169076524, now seen corresponding path program 4 times [2021-07-09 21:53:45,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:45,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080561967] [2021-07-09 21:53:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:45,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:45,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080561967] [2021-07-09 21:53:45,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080561967] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:45,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892780729] [2021-07-09 21:53:45,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:45,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:45,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:45,349 INFO L87 Difference]: Start difference. First operand 1312 states and 2155 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,395 INFO L93 Difference]: Finished difference Result 1233 states and 2016 transitions. [2021-07-09 21:53:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 21:53:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,395 INFO L225 Difference]: With dead ends: 1233 [2021-07-09 21:53:45,395 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 21:53:45,396 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 [2021-07-09 21:53:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 21:53:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 21:53:45,396 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) [2021-07-09 21:53:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 21:53:45,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-07-09 21:53:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:45,396 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 21:53:45,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 21:53:45,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 21:53:45,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 21:53:45,397 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/3) [2021-07-09 21:53:45,398 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-09 21:53:45,399 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:53:45,399 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:53:45,399 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:53:45,399 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:53:45,399 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:53:45,399 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:53:45,399 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:53:45,399 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 21:53:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 168 states have (on average 1.4226190476190477) internal successors, (239), 179 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 21:53:45,407 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-07-09 21:53:45,408 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 21:53:45,408 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:53:45,408 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:53:45,408 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:53:45,408 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:53:45,408 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:53:45,408 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:53:45,408 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:53:45,408 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork1======== [2021-07-09 21:53:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 2400 states, 2281 states have (on average 2.4756685664182374) internal successors, (5647), 2399 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-07-09 21:53:45,573 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:45,573 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] [2021-07-09 21:53:45,573 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:45,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2102570016, now seen corresponding path program 1 times [2021-07-09 21:53:45,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:45,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896064188] [2021-07-09 21:53:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:45,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896064188] [2021-07-09 21:53:45,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896064188] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 21:53:45,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168192432] [2021-07-09 21:53:45,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 21:53:45,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 21:53:45,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 21:53:45,596 INFO L87 Difference]: Start difference. First operand has 2400 states, 2281 states have (on average 2.4756685664182374) internal successors, (5647), 2399 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,607 INFO L93 Difference]: Finished difference Result 2400 states and 5101 transitions. [2021-07-09 21:53:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:53:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-07-09 21:53:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,613 INFO L225 Difference]: With dead ends: 2400 [2021-07-09 21:53:45,613 INFO L226 Difference]: Without dead ends: 1793 [2021-07-09 21:53:45,615 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 [2021-07-09 21:53:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-07-09 21:53:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1793. [2021-07-09 21:53:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1790 states have (on average 2.38268156424581) internal successors, (4265), 1792 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 4265 transitions. [2021-07-09 21:53:45,663 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 4265 transitions. Word has length 37 [2021-07-09 21:53:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:45,663 INFO L482 AbstractCegarLoop]: Abstraction has 1793 states and 4265 transitions. [2021-07-09 21:53:45,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 4265 transitions. [2021-07-09 21:53:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-07-09 21:53:45,664 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:45,664 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] [2021-07-09 21:53:45,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 21:53:45,665 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1906086302, now seen corresponding path program 1 times [2021-07-09 21:53:45,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:45,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063231785] [2021-07-09 21:53:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:45,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:45,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063231785] [2021-07-09 21:53:45,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063231785] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:45,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941188024] [2021-07-09 21:53:45,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:45,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:45,703 INFO L87 Difference]: Start difference. First operand 1793 states and 4265 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,721 INFO L93 Difference]: Finished difference Result 1688 states and 3981 transitions. [2021-07-09 21:53:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:45,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-07-09 21:53:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,726 INFO L225 Difference]: With dead ends: 1688 [2021-07-09 21:53:45,726 INFO L226 Difference]: Without dead ends: 1129 [2021-07-09 21:53:45,727 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-07-09 21:53:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1129. [2021-07-09 21:53:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1127 states have (on average 2.4241348713398403) internal successors, (2732), 1128 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2732 transitions. [2021-07-09 21:53:45,755 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2732 transitions. Word has length 37 [2021-07-09 21:53:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:45,755 INFO L482 AbstractCegarLoop]: Abstraction has 1129 states and 2732 transitions. [2021-07-09 21:53:45,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2732 transitions. [2021-07-09 21:53:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:45,758 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:45,758 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] [2021-07-09 21:53:45,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 21:53:45,758 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:45,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1899000172, now seen corresponding path program 1 times [2021-07-09 21:53:45,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:45,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340593799] [2021-07-09 21:53:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:45,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:45,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340593799] [2021-07-09 21:53:45,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340593799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:45,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797530354] [2021-07-09 21:53:45,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:45,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:45,799 INFO L87 Difference]: Start difference. First operand 1129 states and 2732 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,849 INFO L93 Difference]: Finished difference Result 1371 states and 3270 transitions. [2021-07-09 21:53:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,853 INFO L225 Difference]: With dead ends: 1371 [2021-07-09 21:53:45,854 INFO L226 Difference]: Without dead ends: 931 [2021-07-09 21:53:45,854 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-07-09 21:53:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 837. [2021-07-09 21:53:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 835 states have (on average 2.331736526946108) internal successors, (1947), 836 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1947 transitions. [2021-07-09 21:53:45,877 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1947 transitions. Word has length 48 [2021-07-09 21:53:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:45,878 INFO L482 AbstractCegarLoop]: Abstraction has 837 states and 1947 transitions. [2021-07-09 21:53:45,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1947 transitions. [2021-07-09 21:53:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:45,880 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:45,880 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] [2021-07-09 21:53:45,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 21:53:45,880 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1680845826, now seen corresponding path program 2 times [2021-07-09 21:53:45,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:45,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981743650] [2021-07-09 21:53:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:45,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:45,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:45,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:45,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:45,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981743650] [2021-07-09 21:53:45,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981743650] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:45,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:45,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:45,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587088715] [2021-07-09 21:53:45,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:45,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:45,929 INFO L87 Difference]: Start difference. First operand 837 states and 1947 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:45,984 INFO L93 Difference]: Finished difference Result 1212 states and 2761 transitions. [2021-07-09 21:53:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:45,988 INFO L225 Difference]: With dead ends: 1212 [2021-07-09 21:53:45,988 INFO L226 Difference]: Without dead ends: 1104 [2021-07-09 21:53:45,988 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-07-09 21:53:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 925. [2021-07-09 21:53:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 923 states have (on average 2.2816901408450705) internal successors, (2106), 924 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 2106 transitions. [2021-07-09 21:53:46,003 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 2106 transitions. Word has length 48 [2021-07-09 21:53:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:46,003 INFO L482 AbstractCegarLoop]: Abstraction has 925 states and 2106 transitions. [2021-07-09 21:53:46,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 2106 transitions. [2021-07-09 21:53:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:46,005 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:46,005 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] [2021-07-09 21:53:46,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 21:53:46,005 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:46,005 INFO L82 PathProgramCache]: Analyzing trace with hash 817211984, now seen corresponding path program 3 times [2021-07-09 21:53:46,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:46,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698832957] [2021-07-09 21:53:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:46,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:46,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:46,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:46,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:46,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:46,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698832957] [2021-07-09 21:53:46,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698832957] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:46,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:46,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:46,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948286745] [2021-07-09 21:53:46,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:46,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:46,024 INFO L87 Difference]: Start difference. First operand 925 states and 2106 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:46,088 INFO L93 Difference]: Finished difference Result 1303 states and 2897 transitions. [2021-07-09 21:53:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:46,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:46,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:46,092 INFO L225 Difference]: With dead ends: 1303 [2021-07-09 21:53:46,092 INFO L226 Difference]: Without dead ends: 1276 [2021-07-09 21:53:46,093 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-07-09 21:53:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1070. [2021-07-09 21:53:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1068 states have (on average 2.249063670411985) internal successors, (2402), 1069 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 2402 transitions. [2021-07-09 21:53:46,110 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 2402 transitions. Word has length 48 [2021-07-09 21:53:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:46,110 INFO L482 AbstractCegarLoop]: Abstraction has 1070 states and 2402 transitions. [2021-07-09 21:53:46,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 2402 transitions. [2021-07-09 21:53:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:53:46,112 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:46,112 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] [2021-07-09 21:53:46,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 21:53:46,112 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:46,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1234873710, now seen corresponding path program 4 times [2021-07-09 21:53:46,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:46,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568384178] [2021-07-09 21:53:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:46,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:46,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:46,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:46,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:46,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:46,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:46,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568384178] [2021-07-09 21:53:46,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568384178] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:46,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:46,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:53:46,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417585040] [2021-07-09 21:53:46,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:53:46,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:53:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:53:46,131 INFO L87 Difference]: Start difference. First operand 1070 states and 2402 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:46,169 INFO L93 Difference]: Finished difference Result 966 states and 2195 transitions. [2021-07-09 21:53:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 21:53:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:53:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:46,169 INFO L225 Difference]: With dead ends: 966 [2021-07-09 21:53:46,169 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 21:53:46,170 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:53:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 21:53:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 21:53:46,170 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) [2021-07-09 21:53:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 21:53:46,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-07-09 21:53:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:46,170 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 21:53:46,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:53:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 21:53:46,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 21:53:46,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 21:53:46,170 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork1 was SAFE (3/3) [2021-07-09 21:53:46,171 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 21:53:46,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 09:53:46 BasicIcfg [2021-07-09 21:53:46,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 21:53:46,173 INFO L168 Benchmark]: Toolchain (without parser) took 3245.04 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 150.0 MB in the beginning and 151.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:46,173 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory was 168.1 MB in the beginning and 168.0 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:53:46,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.11 ms. Allocated memory is still 186.6 MB. Free memory was 149.8 MB in the beginning and 159.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:46,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.85 ms. Allocated memory is still 186.6 MB. Free memory was 159.6 MB in the beginning and 157.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:46,174 INFO L168 Benchmark]: Boogie Preprocessor took 27.74 ms. Allocated memory is still 186.6 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:46,174 INFO L168 Benchmark]: RCFGBuilder took 403.34 ms. Allocated memory is still 186.6 MB. Free memory was 155.8 MB in the beginning and 130.2 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:46,174 INFO L168 Benchmark]: TraceAbstraction took 2341.19 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 129.6 MB in the beginning and 151.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:46,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory was 168.1 MB in the beginning and 168.0 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 429.11 ms. Allocated memory is still 186.6 MB. Free memory was 149.8 MB in the beginning and 159.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.85 ms. Allocated memory is still 186.6 MB. Free memory was 159.6 MB in the beginning and 157.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.74 ms. Allocated memory is still 186.6 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 403.34 ms. Allocated memory is still 186.6 MB. Free memory was 155.8 MB in the beginning and 130.2 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2341.19 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 129.6 MB in the beginning and 151.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8570, positive: 6664, positive conditional: 6664, positive unconditional: 0, negative: 1906, negative conditional: 1906, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6960, positive: 6664, positive conditional: 0, positive unconditional: 6664, negative: 296, negative conditional: 0, negative unconditional: 296, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1431, positive: 1357, positive conditional: 0, positive unconditional: 1357, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1431, positive: 1356, positive conditional: 0, positive unconditional: 1356, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6960, positive: 5307, positive conditional: 0, positive unconditional: 5307, negative: 222, negative conditional: 0, negative unconditional: 222, unknown: 1431, unknown conditional: 0, unknown unconditional: 1431] , Statistics on independence cache: Total cache size (in pairs): 1431, Positive cache size: 1357, Positive conditional cache size: 0, Positive unconditional cache size: 1357, Negative cache size: 74, Negative conditional cache size: 0, Negative unconditional cache size: 74, Independence queries for same thread: 1610 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 270, positive: 180, positive conditional: 180, positive unconditional: 0, negative: 90, negative conditional: 90, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 180, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 180, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 180, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 180, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 180, unknown conditional: 0, unknown unconditional: 180] , Statistics on independence cache: Total cache size (in pairs): 180, Positive cache size: 180, Positive conditional cache size: 0, Positive unconditional cache size: 180, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 90 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 9708, positive: 7747, positive conditional: 7747, positive unconditional: 0, negative: 1961, negative conditional: 1961, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8013, positive: 7747, positive conditional: 0, positive unconditional: 7747, negative: 266, negative conditional: 0, negative unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1773, positive: 1693, positive conditional: 0, positive unconditional: 1693, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1773, positive: 1691, positive conditional: 0, positive unconditional: 1691, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8013, positive: 6054, positive conditional: 0, positive unconditional: 6054, negative: 186, negative conditional: 0, negative unconditional: 186, unknown: 1773, unknown conditional: 0, unknown unconditional: 1773] , Statistics on independence cache: Total cache size (in pairs): 1773, Positive cache size: 1693, Positive conditional cache size: 0, Positive unconditional cache size: 1693, Negative cache size: 80, Negative conditional cache size: 0, Negative unconditional cache size: 80, Independence queries for same thread: 1695 - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 802]: 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: thr1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1447.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 29.1ms, AutomataDifference: 419.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 304.0ms, PartialOrderReductionTime: 289.9ms, HoareTripleCheckerStatistics: 627 SDtfs, 314 SDslu, 607 SDs, 0 SdLazy, 205 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2358occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 214.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 643 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.4ms SsaConstructionTime, 69.6ms SatisfiabilityAnalysisTime, 260.4ms InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 6.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 762.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 14.4ms, AutomataDifference: 270.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 157.6ms, PartialOrderReductionTime: 156.4ms, HoareTripleCheckerStatistics: 644 SDtfs, 322 SDslu, 599 SDs, 0 SdLazy, 211 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2400occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 129.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 479 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 31.7ms SatisfiabilityAnalysisTime, 106.2ms InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...