/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:18:53,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:18:53,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:18:53,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:18:53,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:18:53,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:18:53,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:18:53,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:18:53,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:18:53,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:18:53,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:18:53,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:18:53,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:18:53,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:18:53,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:18:53,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:18:53,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:18:53,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:18:53,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:18:53,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:18:53,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:18:53,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:18:53,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:18:53,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:18:53,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:18:53,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:18:53,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:18:53,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:18:53,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:18:53,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:18:53,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:18:53,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:18:53,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:18:53,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:18:53,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:18:53,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:18:53,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:18:53,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:18:53,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:18:53,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:18:53,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:18:53,232 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 [2020-10-22 01:18:53,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:18:53,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:18:53,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:18:53,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:18:53,256 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:18:53,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:18:53,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:18:53,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:18:53,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:18:53,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:18:53,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:18:53,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:18:53,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:18:53,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:18:53,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:18:53,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:18:53,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:18:53,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:18:53,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:18:53,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:18:53,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:18:53,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:18:53,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:18:53,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:18:53,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:18:53,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:18:53,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:18:53,261 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:18:53,261 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:18:53,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:18:53,261 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:18:53,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:18:53,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:18:53,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:18:53,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:18:53,575 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:18:53,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-22 01:18:53,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042ab8984/5552870bfa0e4f0aa0ba02eb078db02c/FLAGb1c57405f [2020-10-22 01:18:54,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:18:54,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-22 01:18:54,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042ab8984/5552870bfa0e4f0aa0ba02eb078db02c/FLAGb1c57405f [2020-10-22 01:18:54,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042ab8984/5552870bfa0e4f0aa0ba02eb078db02c [2020-10-22 01:18:54,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:18:54,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:18:54,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:18:54,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:18:54,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:18:54,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:18:54" (1/1) ... [2020-10-22 01:18:54,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2010bc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:54, skipping insertion in model container [2020-10-22 01:18:54,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:18:54" (1/1) ... [2020-10-22 01:18:54,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:18:54,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:18:54,889 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-22 01:18:55,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:18:55,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:18:55,119 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-22 01:18:55,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:18:55,235 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:18:55,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55 WrapperNode [2020-10-22 01:18:55,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:18:55,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:18:55,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:18:55,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:18:55,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:18:55,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:18:55,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:18:55,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:18:55,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:18:55,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:18:55,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:18:55,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:18:55,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (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 [2020-10-22 01:18:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 01:18:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-22 01:18:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-22 01:18:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-22 01:18:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-22 01:18:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:18:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 01:18:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:18:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:18:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:18:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 01:18:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:18:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:18:55,405 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:18:55,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:18:55,843 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-22 01:18:55,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:18:55 BoogieIcfgContainer [2020-10-22 01:18:55,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:18:55,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:18:55,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:18:55,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:18:55,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:18:54" (1/3) ... [2020-10-22 01:18:55,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0a067a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:18:55, skipping insertion in model container [2020-10-22 01:18:55,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (2/3) ... [2020-10-22 01:18:55,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0a067a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:18:55, skipping insertion in model container [2020-10-22 01:18:55,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:18:55" (3/3) ... [2020-10-22 01:18:55,854 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-22 01:18:55,866 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:18:55,866 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:18:55,874 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-22 01:18:55,875 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:18:55,905 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,906 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,906 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,909 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,910 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,910 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,911 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,911 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,911 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,912 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,912 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,913 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,919 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,921 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,948 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,948 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,949 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,949 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,949 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:55,959 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-22 01:18:55,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-22 01:18:55,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:18:55,993 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:18:55,993 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:18:55,993 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:18:55,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:18:55,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:18:55,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:18:55,994 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:18:56,009 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:18:56,010 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 127 transitions, 276 flow [2020-10-22 01:18:56,012 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 127 transitions, 276 flow [2020-10-22 01:18:56,014 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 127 transitions, 276 flow [2020-10-22 01:18:56,075 INFO L129 PetriNetUnfolder]: 27/127 cut-off events. [2020-10-22 01:18:56,075 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-22 01:18:56,086 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 127 events. 27/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 293 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2020-10-22 01:18:56,093 INFO L116 LiptonReduction]: Number of co-enabled transitions 5016 [2020-10-22 01:18:57,709 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-22 01:18:57,829 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-22 01:18:57,875 INFO L131 LiptonReduction]: Checked pairs total: 19266 [2020-10-22 01:18:57,875 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-22 01:18:57,881 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 77 transitions, 176 flow [2020-10-22 01:18:57,956 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1149 states. [2020-10-22 01:18:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states. [2020-10-22 01:18:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:18:57,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:57,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:18:57,988 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:57,998 INFO L82 PathProgramCache]: Analyzing trace with hash 16977884, now seen corresponding path program 1 times [2020-10-22 01:18:58,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333259797] [2020-10-22 01:18:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333259797] [2020-10-22 01:18:58,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:58,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618873299] [2020-10-22 01:18:58,194 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,196 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,209 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:18:58,209 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:58,214 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:58,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 01:18:58,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:58,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 01:18:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 01:18:58,233 INFO L87 Difference]: Start difference. First operand 1149 states. Second operand 2 states. [2020-10-22 01:18:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:58,282 INFO L93 Difference]: Finished difference Result 1149 states and 3258 transitions. [2020-10-22 01:18:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 01:18:58,284 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-22 01:18:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:58,318 INFO L225 Difference]: With dead ends: 1149 [2020-10-22 01:18:58,318 INFO L226 Difference]: Without dead ends: 1053 [2020-10-22 01:18:58,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 01:18:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-10-22 01:18:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2020-10-22 01:18:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-10-22 01:18:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 3038 transitions. [2020-10-22 01:18:58,490 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 3038 transitions. Word has length 4 [2020-10-22 01:18:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:58,490 INFO L481 AbstractCegarLoop]: Abstraction has 1053 states and 3038 transitions. [2020-10-22 01:18:58,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 01:18:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 3038 transitions. [2020-10-22 01:18:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:18:58,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:58,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:58,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:18:58,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:58,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1633019095, now seen corresponding path program 1 times [2020-10-22 01:18:58,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526895716] [2020-10-22 01:18:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526895716] [2020-10-22 01:18:58,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:58,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1153739613] [2020-10-22 01:18:58,594 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,595 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,596 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:18:58,596 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:58,596 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:58,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:58,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:58,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:58,599 INFO L87 Difference]: Start difference. First operand 1053 states and 3038 transitions. Second operand 3 states. [2020-10-22 01:18:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:58,657 INFO L93 Difference]: Finished difference Result 1000 states and 2836 transitions. [2020-10-22 01:18:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:58,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 01:18:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:58,664 INFO L225 Difference]: With dead ends: 1000 [2020-10-22 01:18:58,664 INFO L226 Difference]: Without dead ends: 760 [2020-10-22 01:18:58,665 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 [2020-10-22 01:18:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-22 01:18:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 742. [2020-10-22 01:18:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-22 01:18:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2158 transitions. [2020-10-22 01:18:58,694 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2158 transitions. Word has length 10 [2020-10-22 01:18:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:58,694 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 2158 transitions. [2020-10-22 01:18:58,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2158 transitions. [2020-10-22 01:18:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:18:58,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:58,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:58,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:18:58,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:58,698 INFO L82 PathProgramCache]: Analyzing trace with hash 747848459, now seen corresponding path program 1 times [2020-10-22 01:18:58,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088423995] [2020-10-22 01:18:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088423995] [2020-10-22 01:18:58,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:58,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [762343865] [2020-10-22 01:18:58,751 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,752 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,753 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-22 01:18:58,753 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:58,754 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:58,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:58,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:58,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:58,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:58,755 INFO L87 Difference]: Start difference. First operand 742 states and 2158 transitions. Second operand 3 states. [2020-10-22 01:18:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:58,791 INFO L93 Difference]: Finished difference Result 705 states and 2043 transitions. [2020-10-22 01:18:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:58,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 01:18:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:58,796 INFO L225 Difference]: With dead ends: 705 [2020-10-22 01:18:58,796 INFO L226 Difference]: Without dead ends: 560 [2020-10-22 01:18:58,797 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 [2020-10-22 01:18:58,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-22 01:18:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2020-10-22 01:18:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-22 01:18:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1667 transitions. [2020-10-22 01:18:58,836 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1667 transitions. Word has length 12 [2020-10-22 01:18:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:58,837 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1667 transitions. [2020-10-22 01:18:58,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:58,837 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1667 transitions. [2020-10-22 01:18:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 01:18:58,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:58,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:58,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:18:58,849 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:58,854 INFO L82 PathProgramCache]: Analyzing trace with hash 202085034, now seen corresponding path program 1 times [2020-10-22 01:18:58,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248278639] [2020-10-22 01:18:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248278639] [2020-10-22 01:18:58,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:18:58,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1494802837] [2020-10-22 01:18:58,956 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,957 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,965 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 89 transitions. [2020-10-22 01:18:58,966 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:59,058 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:59,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:18:59,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:59,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:18:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:59,060 INFO L87 Difference]: Start difference. First operand 560 states and 1667 transitions. Second operand 4 states. [2020-10-22 01:18:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:59,166 INFO L93 Difference]: Finished difference Result 1130 states and 3336 transitions. [2020-10-22 01:18:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:18:59,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-22 01:18:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:59,171 INFO L225 Difference]: With dead ends: 1130 [2020-10-22 01:18:59,172 INFO L226 Difference]: Without dead ends: 626 [2020-10-22 01:18:59,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:18:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-22 01:18:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 604. [2020-10-22 01:18:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-22 01:18:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1759 transitions. [2020-10-22 01:18:59,194 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1759 transitions. Word has length 19 [2020-10-22 01:18:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:59,194 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1759 transitions. [2020-10-22 01:18:59,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1759 transitions. [2020-10-22 01:18:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 01:18:59,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:59,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:59,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 01:18:59,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:59,197 INFO L82 PathProgramCache]: Analyzing trace with hash -72904488, now seen corresponding path program 2 times [2020-10-22 01:18:59,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:59,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772046327] [2020-10-22 01:18:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:59,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772046327] [2020-10-22 01:18:59,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:59,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:18:59,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1455558902] [2020-10-22 01:18:59,232 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:59,234 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:59,238 INFO L252 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-10-22 01:18:59,238 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:59,296 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12327#(not (= ~x~0 1))] [2020-10-22 01:18:59,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:18:59,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:18:59,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:59,298 INFO L87 Difference]: Start difference. First operand 604 states and 1759 transitions. Second operand 4 states. [2020-10-22 01:18:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:59,335 INFO L93 Difference]: Finished difference Result 1004 states and 2699 transitions. [2020-10-22 01:18:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:18:59,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-22 01:18:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:59,343 INFO L225 Difference]: With dead ends: 1004 [2020-10-22 01:18:59,344 INFO L226 Difference]: Without dead ends: 1004 [2020-10-22 01:18:59,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-22 01:18:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 686. [2020-10-22 01:18:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-22 01:18:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1976 transitions. [2020-10-22 01:18:59,375 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1976 transitions. Word has length 19 [2020-10-22 01:18:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:59,376 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1976 transitions. [2020-10-22 01:18:59,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1976 transitions. [2020-10-22 01:18:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 01:18:59,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:59,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:59,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 01:18:59,378 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:59,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2100824202, now seen corresponding path program 3 times [2020-10-22 01:18:59,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:59,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256502866] [2020-10-22 01:18:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:59,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256502866] [2020-10-22 01:18:59,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:59,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:18:59,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [445042743] [2020-10-22 01:18:59,423 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:59,425 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:59,429 INFO L252 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-10-22 01:18:59,429 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:59,479 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14707#(not (= ~x~0 1))] [2020-10-22 01:18:59,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:18:59,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:59,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:18:59,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:59,481 INFO L87 Difference]: Start difference. First operand 686 states and 1976 transitions. Second operand 4 states. [2020-10-22 01:18:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:59,507 INFO L93 Difference]: Finished difference Result 754 states and 1974 transitions. [2020-10-22 01:18:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:18:59,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-22 01:18:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:59,512 INFO L225 Difference]: With dead ends: 754 [2020-10-22 01:18:59,513 INFO L226 Difference]: Without dead ends: 748 [2020-10-22 01:18:59,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-22 01:18:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 600. [2020-10-22 01:18:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-22 01:18:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1629 transitions. [2020-10-22 01:18:59,537 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1629 transitions. Word has length 19 [2020-10-22 01:18:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:59,537 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 1629 transitions. [2020-10-22 01:18:59,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1629 transitions. [2020-10-22 01:18:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 01:18:59,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:59,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:59,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 01:18:59,543 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1908285911, now seen corresponding path program 1 times [2020-10-22 01:18:59,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:59,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578018539] [2020-10-22 01:18:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:59,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578018539] [2020-10-22 01:18:59,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:59,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:18:59,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [342422348] [2020-10-22 01:18:59,609 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:59,611 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:59,615 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 73 transitions. [2020-10-22 01:18:59,615 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:59,701 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:59,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:59,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:59,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:59,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:59,702 INFO L87 Difference]: Start difference. First operand 600 states and 1629 transitions. Second operand 3 states. [2020-10-22 01:18:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:59,737 INFO L93 Difference]: Finished difference Result 720 states and 1899 transitions. [2020-10-22 01:18:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:59,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-22 01:18:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:59,769 INFO L225 Difference]: With dead ends: 720 [2020-10-22 01:18:59,770 INFO L226 Difference]: Without dead ends: 482 [2020-10-22 01:18:59,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-22 01:18:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 396. [2020-10-22 01:18:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-22 01:18:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 991 transitions. [2020-10-22 01:18:59,785 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 991 transitions. Word has length 19 [2020-10-22 01:18:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:59,785 INFO L481 AbstractCegarLoop]: Abstraction has 396 states and 991 transitions. [2020-10-22 01:18:59,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 991 transitions. [2020-10-22 01:18:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 01:18:59,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:59,787 INFO L422 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] [2020-10-22 01:18:59,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 01:18:59,787 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:59,788 INFO L82 PathProgramCache]: Analyzing trace with hash 939932151, now seen corresponding path program 1 times [2020-10-22 01:18:59,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:59,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886644645] [2020-10-22 01:18:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:59,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886644645] [2020-10-22 01:18:59,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:59,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:18:59,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [677979410] [2020-10-22 01:18:59,830 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:59,832 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:59,836 INFO L252 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-10-22 01:18:59,836 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:59,970 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [18181#(<= 1 thr1Thread1of1ForFork0_~b21~0), 18182#(<= 1 ~b2~0)] [2020-10-22 01:18:59,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:18:59,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:18:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:18:59,971 INFO L87 Difference]: Start difference. First operand 396 states and 991 transitions. Second operand 6 states. [2020-10-22 01:19:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:19:00,023 INFO L93 Difference]: Finished difference Result 464 states and 1139 transitions. [2020-10-22 01:19:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:19:00,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-22 01:19:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:19:00,027 INFO L225 Difference]: With dead ends: 464 [2020-10-22 01:19:00,027 INFO L226 Difference]: Without dead ends: 378 [2020-10-22 01:19:00,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:19:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-22 01:19:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 342. [2020-10-22 01:19:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-22 01:19:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 825 transitions. [2020-10-22 01:19:00,038 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 825 transitions. Word has length 22 [2020-10-22 01:19:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:19:00,039 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 825 transitions. [2020-10-22 01:19:00,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:19:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 825 transitions. [2020-10-22 01:19:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 01:19:00,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:19:00,040 INFO L422 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] [2020-10-22 01:19:00,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 01:19:00,040 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:19:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:19:00,041 INFO L82 PathProgramCache]: Analyzing trace with hash -616648577, now seen corresponding path program 1 times [2020-10-22 01:19:00,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:19:00,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933661091] [2020-10-22 01:19:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:19:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:19:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:19:00,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933661091] [2020-10-22 01:19:00,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:19:00,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:19:00,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1385651640] [2020-10-22 01:19:00,077 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:19:00,079 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:19:00,084 INFO L252 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-10-22 01:19:00,084 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:19:00,213 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [19339#(<= 1 thr2Thread1of1ForFork1_~b12~0), 19340#(<= 1 ~b1~0)] [2020-10-22 01:19:00,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:19:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:19:00,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:19:00,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:19:00,214 INFO L87 Difference]: Start difference. First operand 342 states and 825 transitions. Second operand 6 states. [2020-10-22 01:19:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:19:00,238 INFO L93 Difference]: Finished difference Result 160 states and 404 transitions. [2020-10-22 01:19:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:19:00,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-22 01:19:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:19:00,240 INFO L225 Difference]: With dead ends: 160 [2020-10-22 01:19:00,240 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 01:19:00,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:19:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 01:19:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 01:19:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 01:19:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 01:19:00,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-22 01:19:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:19:00,242 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 01:19:00,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:19:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 01:19:00,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 01:19:00,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 01:19:00,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:19:00 BasicIcfg [2020-10-22 01:19:00,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:19:00,249 INFO L168 Benchmark]: Toolchain (without parser) took 5798.58 ms. Allocated memory was 138.9 MB in the beginning and 295.7 MB in the end (delta: 156.8 MB). Free memory was 100.7 MB in the beginning and 184.5 MB in the end (delta: -83.8 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,249 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.21 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 159.2 MB in the end (delta: -59.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.12 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 156.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,252 INFO L168 Benchmark]: Boogie Preprocessor took 38.25 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,253 INFO L168 Benchmark]: RCFGBuilder took 516.29 ms. Allocated memory is still 202.4 MB. Free memory was 155.1 MB in the beginning and 126.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,254 INFO L168 Benchmark]: TraceAbstraction took 4399.61 ms. Allocated memory was 202.4 MB in the beginning and 295.7 MB in the end (delta: 93.3 MB). Free memory was 126.3 MB in the beginning and 184.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2020-10-22 01:19:00,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 779.21 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 159.2 MB in the end (delta: -59.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.12 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 156.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.25 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.29 ms. Allocated memory is still 202.4 MB. Free memory was 155.1 MB in the beginning and 126.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4399.61 ms. Allocated memory was 202.4 MB in the beginning and 295.7 MB in the end (delta: 93.3 MB). Free memory was 126.3 MB in the beginning and 184.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2359 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 652 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 106 PlacesBefore, 62 PlacesAfterwards, 127 TransitionsBefore, 77 TransitionsAfterwards, 5016 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 73 TotalNumberOfCompositions, 19266 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: 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, 100 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 689 SDtfs, 425 SDslu, 783 SDs, 0 SdLazy, 176 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1149occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 628 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 4151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...