/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 16:20:42,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 16:20:42,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 16:20:42,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 16:20:42,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 16:20:42,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 16:20:42,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 16:20:42,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 16:20:42,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 16:20:42,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 16:20:42,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 16:20:42,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 16:20:42,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 16:20:42,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 16:20:42,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 16:20:42,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 16:20:42,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 16:20:42,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 16:20:42,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 16:20:42,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 16:20:42,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 16:20:42,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 16:20:42,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 16:20:42,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 16:20:43,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 16:20:43,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 16:20:43,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 16:20:43,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 16:20:43,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 16:20:43,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 16:20:43,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 16:20:43,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 16:20:43,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 16:20:43,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 16:20:43,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 16:20:43,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 16:20:43,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 16:20:43,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 16:20:43,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 16:20:43,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 16:20:43,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 16:20:43,077 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 16:20:43,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 16:20:43,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 16:20:43,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 16:20:43,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 16:20:43,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 16:20:43,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 16:20:43,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 16:20:43,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 16:20:43,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 16:20:43,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 16:20:43,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 16:20:43,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 16:20:43,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 16:20:43,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 16:20:43,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 16:20:43,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 16:20:43,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 16:20:43,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 16:20:43,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 16:20:43,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 16:20:43,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 16:20:43,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 16:20:43,085 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 16:20:43,085 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 16:20:43,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 16:20:43,086 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 16:20:43,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 16:20:43,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 16:20:43,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 16:20:43,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 16:20:43,541 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 16:20:43,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2020-11-09 16:20:43,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0c5f9ae/7c8c596e74f84f55bf42989c9b6f094d/FLAGcf8947710 [2020-11-09 16:20:44,322 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 16:20:44,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2020-11-09 16:20:44,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0c5f9ae/7c8c596e74f84f55bf42989c9b6f094d/FLAGcf8947710 [2020-11-09 16:20:44,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0c5f9ae/7c8c596e74f84f55bf42989c9b6f094d [2020-11-09 16:20:44,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 16:20:44,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 16:20:44,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 16:20:44,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 16:20:44,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 16:20:44,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:20:44" (1/1) ... [2020-11-09 16:20:44,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a553e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:44, skipping insertion in model container [2020-11-09 16:20:44,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:20:44" (1/1) ... [2020-11-09 16:20:44,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 16:20:44,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 16:20:44,948 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-09 16:20:45,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:20:45,139 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 16:20:45,181 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-09 16:20:45,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:20:45,342 INFO L208 MainTranslator]: Completed translation [2020-11-09 16:20:45,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45 WrapperNode [2020-11-09 16:20:45,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 16:20:45,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 16:20:45,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 16:20:45,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 16:20:45,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 16:20:45,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 16:20:45,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 16:20:45,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 16:20:45,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (1/1) ... [2020-11-09 16:20:45,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 16:20:45,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 16:20:45,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 16:20:45,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 16:20:45,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (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 [2020-11-09 16:20:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-09 16:20:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-09 16:20:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-09 16:20:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-09 16:20:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-09 16:20:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 16:20:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 16:20:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 16:20:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 16:20:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 16:20:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 16:20:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 16:20:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 16:20:45,544 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 16:20:46,178 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 16:20:46,179 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-09 16:20:46,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:20:46 BoogieIcfgContainer [2020-11-09 16:20:46,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 16:20:46,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 16:20:46,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 16:20:46,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 16:20:46,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:20:44" (1/3) ... [2020-11-09 16:20:46,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d44c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:20:46, skipping insertion in model container [2020-11-09 16:20:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:45" (2/3) ... [2020-11-09 16:20:46,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d44c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:20:46, skipping insertion in model container [2020-11-09 16:20:46,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:20:46" (3/3) ... [2020-11-09 16:20:46,198 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-11-09 16:20:46,222 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 16:20:46,222 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 16:20:46,227 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-09 16:20:46,228 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 16:20:46,295 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,295 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,301 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,301 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,301 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,301 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,302 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,303 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,304 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,311 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,342 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,343 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,343 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,352 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,352 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,353 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,353 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,353 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,353 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,353 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,354 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:46,365 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-09 16:20:46,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-09 16:20:46,423 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 16:20:46,424 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 16:20:46,424 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 16:20:46,425 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 16:20:46,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 16:20:46,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 16:20:46,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 16:20:46,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 16:20:46,452 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 16:20:46,461 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 100 transitions, 222 flow [2020-11-09 16:20:46,465 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 100 transitions, 222 flow [2020-11-09 16:20:46,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 100 transitions, 222 flow [2020-11-09 16:20:46,555 INFO L129 PetriNetUnfolder]: 16/100 cut-off events. [2020-11-09 16:20:46,555 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-09 16:20:46,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 100 events. 16/100 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2020-11-09 16:20:46,569 INFO L116 LiptonReduction]: Number of co-enabled transitions 2296 [2020-11-09 16:20:49,437 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-09 16:20:49,722 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-09 16:20:50,146 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-11-09 16:20:50,288 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-09 16:20:50,614 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-11-09 16:20:50,774 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-09 16:20:50,790 INFO L131 LiptonReduction]: Checked pairs total: 8520 [2020-11-09 16:20:50,790 INFO L133 LiptonReduction]: Total number of compositions: 77 [2020-11-09 16:20:50,797 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 47 transitions, 116 flow [2020-11-09 16:20:50,828 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 418 states. [2020-11-09 16:20:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-11-09 16:20:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 16:20:50,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:50,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 16:20:50,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash -242800708, now seen corresponding path program 1 times [2020-11-09 16:20:50,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:50,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410838588] [2020-11-09 16:20:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:51,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410838588] [2020-11-09 16:20:51,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:51,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:20:51,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1679491768] [2020-11-09 16:20:51,069 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:51,073 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:51,088 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-11-09 16:20:51,088 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:51,094 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:51,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:20:51,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:51,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:20:51,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:20:51,117 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 3 states. [2020-11-09 16:20:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:51,231 INFO L93 Difference]: Finished difference Result 457 states and 1131 transitions. [2020-11-09 16:20:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:20:51,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-09 16:20:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:51,259 INFO L225 Difference]: With dead ends: 457 [2020-11-09 16:20:51,259 INFO L226 Difference]: Without dead ends: 262 [2020-11-09 16:20:51,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:20:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-09 16:20:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 244. [2020-11-09 16:20:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-11-09 16:20:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 645 transitions. [2020-11-09 16:20:51,331 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 645 transitions. Word has length 6 [2020-11-09 16:20:51,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:51,332 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 645 transitions. [2020-11-09 16:20:51,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:20:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 645 transitions. [2020-11-09 16:20:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 16:20:51,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:51,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:51,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 16:20:51,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:51,335 INFO L82 PathProgramCache]: Analyzing trace with hash -833333921, now seen corresponding path program 1 times [2020-11-09 16:20:51,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:51,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17243471] [2020-11-09 16:20:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:51,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17243471] [2020-11-09 16:20:51,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:51,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:20:51,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2120157432] [2020-11-09 16:20:51,414 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:51,415 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:51,417 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 16:20:51,417 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:51,417 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:51,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:20:51,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:51,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:20:51,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:20:51,422 INFO L87 Difference]: Start difference. First operand 244 states and 645 transitions. Second operand 3 states. [2020-11-09 16:20:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:51,460 INFO L93 Difference]: Finished difference Result 229 states and 589 transitions. [2020-11-09 16:20:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:20:51,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 16:20:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:51,467 INFO L225 Difference]: With dead ends: 229 [2020-11-09 16:20:51,467 INFO L226 Difference]: Without dead ends: 156 [2020-11-09 16:20:51,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:20:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-09 16:20:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-11-09 16:20:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-09 16:20:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 408 transitions. [2020-11-09 16:20:51,496 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 408 transitions. Word has length 8 [2020-11-09 16:20:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:51,501 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 408 transitions. [2020-11-09 16:20:51,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:20:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 408 transitions. [2020-11-09 16:20:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 16:20:51,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:51,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:51,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 16:20:51,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1922613293, now seen corresponding path program 1 times [2020-11-09 16:20:51,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:51,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270045199] [2020-11-09 16:20:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:51,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270045199] [2020-11-09 16:20:51,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:51,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 16:20:51,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [305211906] [2020-11-09 16:20:51,642 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:51,643 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:51,650 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-11-09 16:20:51,650 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:51,692 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:51,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:20:51,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:51,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:20:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:20:51,694 INFO L87 Difference]: Start difference. First operand 156 states and 408 transitions. Second operand 4 states. [2020-11-09 16:20:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:51,748 INFO L93 Difference]: Finished difference Result 204 states and 568 transitions. [2020-11-09 16:20:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:20:51,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 16:20:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:51,750 INFO L225 Difference]: With dead ends: 204 [2020-11-09 16:20:51,751 INFO L226 Difference]: Without dead ends: 150 [2020-11-09 16:20:51,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:20:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-09 16:20:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-09 16:20:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-09 16:20:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 388 transitions. [2020-11-09 16:20:51,763 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 388 transitions. Word has length 11 [2020-11-09 16:20:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:51,763 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 388 transitions. [2020-11-09 16:20:51,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:20:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 388 transitions. [2020-11-09 16:20:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 16:20:51,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:51,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:51,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 16:20:51,765 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:51,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:51,766 INFO L82 PathProgramCache]: Analyzing trace with hash -941366756, now seen corresponding path program 1 times [2020-11-09 16:20:51,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:51,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929072165] [2020-11-09 16:20:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:51,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929072165] [2020-11-09 16:20:51,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:51,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 16:20:51,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [163920666] [2020-11-09 16:20:51,817 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:51,818 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:51,819 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-11-09 16:20:51,819 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:51,829 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:51,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:20:51,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:51,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:20:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:20:51,831 INFO L87 Difference]: Start difference. First operand 150 states and 388 transitions. Second operand 4 states. [2020-11-09 16:20:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:51,880 INFO L93 Difference]: Finished difference Result 198 states and 544 transitions. [2020-11-09 16:20:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:20:51,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 16:20:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:51,883 INFO L225 Difference]: With dead ends: 198 [2020-11-09 16:20:51,883 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 16:20:51,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:20:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 16:20:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 16:20:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 16:20:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 367 transitions. [2020-11-09 16:20:51,898 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 367 transitions. Word has length 11 [2020-11-09 16:20:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:51,898 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 367 transitions. [2020-11-09 16:20:51,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:20:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 367 transitions. [2020-11-09 16:20:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 16:20:51,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:51,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:51,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 16:20:51,903 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:51,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1713958866, now seen corresponding path program 1 times [2020-11-09 16:20:51,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:51,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776088738] [2020-11-09 16:20:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:52,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776088738] [2020-11-09 16:20:52,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:52,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:20:52,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1280385632] [2020-11-09 16:20:52,009 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:52,012 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:52,015 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-11-09 16:20:52,016 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:52,069 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3427#(< thr1Thread1of1ForFork0_~f2~0 1), 3428#(< ~flag2~0 1)] [2020-11-09 16:20:52,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 16:20:52,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:52,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 16:20:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-09 16:20:52,071 INFO L87 Difference]: Start difference. First operand 144 states and 367 transitions. Second operand 6 states. [2020-11-09 16:20:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:52,119 INFO L93 Difference]: Finished difference Result 96 states and 192 transitions. [2020-11-09 16:20:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:20:52,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 16:20:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:52,120 INFO L225 Difference]: With dead ends: 96 [2020-11-09 16:20:52,120 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 16:20:52,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 16:20:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 16:20:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 16:20:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 16:20:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 175 transitions. [2020-11-09 16:20:52,126 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 175 transitions. Word has length 15 [2020-11-09 16:20:52,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:52,126 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 175 transitions. [2020-11-09 16:20:52,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 16:20:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 175 transitions. [2020-11-09 16:20:52,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 16:20:52,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:52,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:52,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 16:20:52,128 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1179268395, now seen corresponding path program 1 times [2020-11-09 16:20:52,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:52,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125312059] [2020-11-09 16:20:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:52,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125312059] [2020-11-09 16:20:52,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:52,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:20:52,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1404833794] [2020-11-09 16:20:52,178 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:52,180 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:52,182 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-11-09 16:20:52,182 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:52,190 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:52,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:20:52,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:52,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:20:52,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:20:52,191 INFO L87 Difference]: Start difference. First operand 86 states and 175 transitions. Second operand 4 states. [2020-11-09 16:20:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:52,209 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-11-09 16:20:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:20:52,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-09 16:20:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:52,210 INFO L225 Difference]: With dead ends: 12 [2020-11-09 16:20:52,210 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 16:20:52,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:20:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 16:20:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 16:20:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 16:20:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 16:20:52,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 16:20:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:52,211 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 16:20:52,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:20:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 16:20:52,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 16:20:52,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 16:20:52,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:20:52 BasicIcfg [2020-11-09 16:20:52,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 16:20:52,217 INFO L168 Benchmark]: Toolchain (without parser) took 7597.95 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 126.9 MB in the beginning and 150.8 MB in the end (delta: -23.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2020-11-09 16:20:52,218 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 153.1 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:20:52,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.05 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 128.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2020-11-09 16:20:52,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 126.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:20:52,220 INFO L168 Benchmark]: Boogie Preprocessor took 31.62 ms. Allocated memory is still 153.1 MB. Free memory was 126.9 MB in the beginning and 125.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:20:52,221 INFO L168 Benchmark]: RCFGBuilder took 722.61 ms. Allocated memory is still 153.1 MB. Free memory was 125.3 MB in the beginning and 102.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:20:52,222 INFO L168 Benchmark]: TraceAbstraction took 6027.94 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 101.7 MB in the beginning and 150.8 MB in the end (delta: -49.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:20:52,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 153.1 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 715.05 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 128.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 126.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.62 ms. Allocated memory is still 153.1 MB. Free memory was 126.9 MB in the beginning and 125.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.61 ms. Allocated memory is still 153.1 MB. Free memory was 125.3 MB in the beginning and 102.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6027.94 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 101.7 MB in the beginning and 150.8 MB in the end (delta: -49.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1218 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 282 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 90 PlacesBefore, 43 PlacesAfterwards, 100 TransitionsBefore, 47 TransitionsAfterwards, 2296 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 77 TotalNumberOfCompositions, 8520 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 256 SDtfs, 188 SDslu, 241 SDs, 0 SdLazy, 74 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...