/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-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 16:59:45,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 16:59:45,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 16:59:45,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 16:59:45,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 16:59:45,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 16:59:45,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 16:59:45,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 16:59:45,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 16:59:45,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 16:59:45,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 16:59:45,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 16:59:45,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 16:59:45,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 16:59:45,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 16:59:45,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 16:59:45,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 16:59:45,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 16:59:45,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 16:59:45,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 16:59:45,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 16:59:45,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 16:59:45,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 16:59:45,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 16:59:45,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 16:59:45,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 16:59:45,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 16:59:45,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 16:59:45,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 16:59:45,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 16:59:45,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 16:59:45,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 16:59:45,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 16:59:45,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 16:59:45,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 16:59:45,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 16:59:45,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 16:59:45,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 16:59:45,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 16:59:45,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 16:59:45,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 16:59:45,153 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 16:59:45,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 16:59:45,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 16:59:45,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 16:59:45,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 16:59:45,218 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 16:59:45,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 16:59:45,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 16:59:45,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 16:59:45,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 16:59:45,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 16:59:45,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 16:59:45,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 16:59:45,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 16:59:45,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 16:59:45,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 16:59:45,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 16:59:45,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 16:59:45,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 16:59:45,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 16:59:45,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 16:59:45,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 16:59:45,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 16:59:45,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 16:59:45,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 16:59:45,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 16:59:45,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 16:59:45,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 16:59:45,225 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 16:59:45,225 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 16:59:45,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 16:59:45,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 16:59:45,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 16:59:45,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 16:59:45,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 16:59:45,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 16:59:45,689 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 16:59:45,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-11-09 16:59:45,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1ec1bb9/e319697f2af24f8383ef943dbf109e05/FLAG63985f58f [2020-11-09 16:59:46,646 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 16:59:46,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-11-09 16:59:46,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1ec1bb9/e319697f2af24f8383ef943dbf109e05/FLAG63985f58f [2020-11-09 16:59:46,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1ec1bb9/e319697f2af24f8383ef943dbf109e05 [2020-11-09 16:59:46,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 16:59:46,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 16:59:46,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 16:59:46,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 16:59:46,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 16:59:46,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226cfcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46, skipping insertion in model container [2020-11-09 16:59:46,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 16:59:46,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 16:59:47,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:59:47,466 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 16:59:47,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:59:47,666 INFO L208 MainTranslator]: Completed translation [2020-11-09 16:59:47,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47 WrapperNode [2020-11-09 16:59:47,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 16:59:47,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 16:59:47,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 16:59:47,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 16:59:47,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 16:59:47,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 16:59:47,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 16:59:47,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 16:59:47,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (1/1) ... [2020-11-09 16:59:47,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 16:59:47,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 16:59:47,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 16:59:47,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 16:59:47,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (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 16:59:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 16:59:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 16:59:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 16:59:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 16:59:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 16:59:47,847 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 16:59:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 16:59:47,847 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 16:59:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 16:59:47,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 16:59:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 16:59:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 16:59:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 16:59:47,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 16:59:47,850 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 16:59:48,440 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 16:59:48,441 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 16:59:48,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:48 BoogieIcfgContainer [2020-11-09 16:59:48,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 16:59:48,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 16:59:48,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 16:59:48,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 16:59:48,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:59:46" (1/3) ... [2020-11-09 16:59:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcbc16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:48, skipping insertion in model container [2020-11-09 16:59:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:47" (2/3) ... [2020-11-09 16:59:48,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcbc16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:48, skipping insertion in model container [2020-11-09 16:59:48,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:48" (3/3) ... [2020-11-09 16:59:48,453 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-11-09 16:59:48,469 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 16:59:48,470 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 16:59:48,474 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 16:59:48,475 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 16:59:48,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,512 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,512 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:48,534 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 16:59:48,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 16:59:48,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 16:59:48,570 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 16:59:48,571 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 16:59:48,571 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 16:59:48,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 16:59:48,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 16:59:48,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 16:59:48,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 16:59:48,585 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 16:59:48,586 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 16:59:48,589 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 16:59:48,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 16:59:48,638 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 16:59:48,638 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 16:59:48,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 16:59:48,646 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 16:59:50,906 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 16:59:51,539 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 16:59:51,816 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 16:59:51,927 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-09 16:59:51,927 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 16:59:51,935 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 16:59:51,967 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 16:59:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 16:59:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 16:59:51,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:51,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:51,979 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-09 16:59:52,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385564551] [2020-11-09 16:59:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:52,198 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 16:59:52,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385564551] [2020-11-09 16:59:52,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:52,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:59:52,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [341613886] [2020-11-09 16:59:52,202 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:52,205 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:52,221 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 16:59:52,221 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:52,226 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:52,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 16:59:52,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:52,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 16:59:52,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 16:59:52,247 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 16:59:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:52,273 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 16:59:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 16:59:52,274 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 16:59:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:52,297 INFO L225 Difference]: With dead ends: 362 [2020-11-09 16:59:52,297 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 16:59:52,298 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 [2020-11-09 16:59:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 16:59:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 16:59:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 16:59:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 16:59:52,381 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 16:59:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:52,383 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 16:59:52,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 16:59:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 16:59:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 16:59:52,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:52,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:52,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 16:59:52,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:52,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-09 16:59:52,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730130899] [2020-11-09 16:59:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:52,483 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 16:59:52,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730130899] [2020-11-09 16:59:52,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:52,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:59:52,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1917699533] [2020-11-09 16:59:52,484 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:52,506 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:52,509 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 16:59:52,509 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:52,510 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:52,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:59:52,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:59:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:59:52,513 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-09 16:59:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:52,535 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-09 16:59:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:59:52,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 16:59:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:52,539 INFO L225 Difference]: With dead ends: 217 [2020-11-09 16:59:52,539 INFO L226 Difference]: Without dead ends: 217 [2020-11-09 16:59:52,540 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 16:59:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-09 16:59:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-09 16:59:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-09 16:59:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-09 16:59:52,560 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-09 16:59:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:52,561 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-09 16:59:52,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:59:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-09 16:59:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 16:59:52,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:52,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:52,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 16:59:52,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:52,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-09 16:59:52,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893148618] [2020-11-09 16:59:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:52,687 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 16:59:52,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893148618] [2020-11-09 16:59:52,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:52,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:52,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1018764349] [2020-11-09 16:59:52,689 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:52,690 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:52,695 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 16:59:52,695 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:52,859 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2430#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 16:59:52,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 16:59:52,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:52,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 16:59:52,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:52,864 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-11-09 16:59:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:52,927 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-09 16:59:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:59:52,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 16:59:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:52,929 INFO L225 Difference]: With dead ends: 136 [2020-11-09 16:59:52,929 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 16:59:52,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 16:59:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 16:59:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 16:59:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 16:59:52,951 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 16:59:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:52,951 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 16:59:52,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 16:59:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 16:59:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 16:59:52,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:52,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:52,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 16:59:52,954 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-09 16:59:52,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134594569] [2020-11-09 16:59:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,106 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 16:59:53,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134594569] [2020-11-09 16:59:53,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 16:59:53,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [747894340] [2020-11-09 16:59:53,108 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,110 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,115 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 85 transitions. [2020-11-09 16:59:53,116 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,300 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2844#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 16:59:53,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 16:59:53,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 16:59:53,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 16:59:53,302 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-09 16:59:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,333 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-09 16:59:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:59:53,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 16:59:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,335 INFO L225 Difference]: With dead ends: 109 [2020-11-09 16:59:53,335 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 16:59:53,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 16:59:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 16:59:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 16:59:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 16:59:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 16:59:53,341 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 16:59:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,341 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 16:59:53,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 16:59:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 16:59:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:59:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:53,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:53,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 16:59:53,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-09 16:59:53,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:53,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029355399] [2020-11-09 16:59:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,432 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 16:59:53,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029355399] [2020-11-09 16:59:53,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:53,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1030530276] [2020-11-09 16:59:53,434 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,436 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,445 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 105 transitions. [2020-11-09 16:59:53,445 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,452 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:53,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:59:53,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:59:53,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:59:53,454 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 16:59:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,478 INFO L93 Difference]: Finished difference Result 127 states and 273 transitions. [2020-11-09 16:59:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:59:53,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 16:59:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,480 INFO L225 Difference]: With dead ends: 127 [2020-11-09 16:59:53,480 INFO L226 Difference]: Without dead ends: 93 [2020-11-09 16:59:53,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 16:59:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-09 16:59:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-09 16:59:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-09 16:59:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 199 transitions. [2020-11-09 16:59:53,485 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 199 transitions. Word has length 18 [2020-11-09 16:59:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,485 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 199 transitions. [2020-11-09 16:59:53,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:59:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 199 transitions. [2020-11-09 16:59:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:59:53,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:53,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:53,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 16:59:53,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-11-09 16:59:53,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:53,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472299306] [2020-11-09 16:59:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,589 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 16:59:53,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472299306] [2020-11-09 16:59:53,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:53,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1275187262] [2020-11-09 16:59:53,591 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,594 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,603 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 104 transitions. [2020-11-09 16:59:53,603 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,773 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:53,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 16:59:53,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 16:59:53,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:53,777 INFO L87 Difference]: Start difference. First operand 93 states and 199 transitions. Second operand 5 states. [2020-11-09 16:59:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,811 INFO L93 Difference]: Finished difference Result 131 states and 273 transitions. [2020-11-09 16:59:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:59:53,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 16:59:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,812 INFO L225 Difference]: With dead ends: 131 [2020-11-09 16:59:53,813 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 16:59:53,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 16:59:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 16:59:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 16:59:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 16:59:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 121 transitions. [2020-11-09 16:59:53,817 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 121 transitions. Word has length 18 [2020-11-09 16:59:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,817 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 121 transitions. [2020-11-09 16:59:53,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 16:59:53,817 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 121 transitions. [2020-11-09 16:59:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:59:53,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:53,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:53,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 16:59:53,819 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:53,819 INFO L82 PathProgramCache]: Analyzing trace with hash 46641744, now seen corresponding path program 3 times [2020-11-09 16:59:53,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:53,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564857468] [2020-11-09 16:59:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,873 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 16:59:53,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564857468] [2020-11-09 16:59:53,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:53,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [373138257] [2020-11-09 16:59:53,875 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,878 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,883 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-11-09 16:59:53,883 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,887 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:53,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:59:53,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:59:53,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:59:53,889 INFO L87 Difference]: Start difference. First operand 63 states and 121 transitions. Second operand 4 states. [2020-11-09 16:59:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,902 INFO L93 Difference]: Finished difference Result 62 states and 120 transitions. [2020-11-09 16:59:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:59:53,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 16:59:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,903 INFO L225 Difference]: With dead ends: 62 [2020-11-09 16:59:53,903 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 16:59:53,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 16:59:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 16:59:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 16:59:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 16:59:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 16:59:53,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 16:59:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,905 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 16:59:53,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:59:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 16:59:53,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 16:59:53,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 16:59:53,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:59:53 BasicIcfg [2020-11-09 16:59:53,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 16:59:53,912 INFO L168 Benchmark]: Toolchain (without parser) took 7052.79 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 131.4 MB in the beginning and 176.6 MB in the end (delta: -45.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,913 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:59:53,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.09 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 132.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.25 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 130.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,915 INFO L168 Benchmark]: Boogie Preprocessor took 28.65 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 129.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,916 INFO L168 Benchmark]: RCFGBuilder took 682.79 ms. Allocated memory is still 157.3 MB. Free memory was 129.1 MB in the beginning and 106.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,917 INFO L168 Benchmark]: TraceAbstraction took 5465.27 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 106.5 MB in the beginning and 176.6 MB in the end (delta: -70.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:59:53,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 799.09 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 132.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 62.25 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 130.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.65 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 129.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 682.79 ms. Allocated memory is still 157.3 MB. Free memory was 129.1 MB in the beginning and 106.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5465.27 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 106.5 MB in the beginning and 176.6 MB in the end (delta: -70.1 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 778 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 124 SDtfs, 66 SDslu, 177 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...