/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-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:30:44,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:30:44,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:30:44,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:30:44,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:30:44,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:30:44,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:30:44,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:30:44,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:30:44,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:30:44,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:30:44,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:30:44,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:30:44,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:30:44,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:30:44,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:30:44,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:30:44,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:30:44,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:30:44,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:30:44,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:30:44,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:30:44,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:30:44,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:30:44,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:30:44,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:30:44,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:30:44,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:30:44,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:30:44,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:30:44,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:30:44,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:30:44,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:30:44,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:30:44,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:30:44,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:30:44,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:30:44,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:30:44,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:30:44,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:30:44,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:30:44,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:30:44,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:30:44,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:30:44,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:30:44,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:30:44,607 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:30:44,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:30:44,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:30:44,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:30:44,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:30:44,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:30:44,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:30:44,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:30:44,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:30:44,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:30:44,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:30:44,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:30:44,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:30:44,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:30:44,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:30:44,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:30:44,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:30:44,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:44,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:30:44,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:30:44,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:30:44,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:30:44,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:30:44,611 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:30:44,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:30:44,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:30:44,612 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:30:44,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:30:44,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:30:44,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:30:44,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:30:44,931 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:30:44,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 12:30:44,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/138067788/357c0e80d5ad40e39e9704a13e24da66/FLAGcc9cf9316 [2020-10-16 12:30:45,518 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:30:45,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 12:30:45,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/138067788/357c0e80d5ad40e39e9704a13e24da66/FLAGcc9cf9316 [2020-10-16 12:30:45,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/138067788/357c0e80d5ad40e39e9704a13e24da66 [2020-10-16 12:30:45,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:30:45,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:30:45,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:45,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:30:45,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:30:45,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:45" (1/1) ... [2020-10-16 12:30:45,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f618b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:45, skipping insertion in model container [2020-10-16 12:30:45,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:45" (1/1) ... [2020-10-16 12:30:45,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:30:45,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:30:46,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:46,374 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:30:46,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:46,497 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:30:46,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46 WrapperNode [2020-10-16 12:30:46,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:46,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:46,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:30:46,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:30:46,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:46,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:30:46,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:30:46,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:30:46,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:30:46,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:30:46,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:30:46,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:30:46,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:30:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 12:30:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 12:30:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:30:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:30:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:30:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:30:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:30:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:30:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:30:46,656 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:30:47,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:30:47,048 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 12:30:47,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:47 BoogieIcfgContainer [2020-10-16 12:30:47,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:30:47,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:30:47,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:30:47,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:30:47,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:45" (1/3) ... [2020-10-16 12:30:47,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512202d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:47, skipping insertion in model container [2020-10-16 12:30:47,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46" (2/3) ... [2020-10-16 12:30:47,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512202d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:47, skipping insertion in model container [2020-10-16 12:30:47,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:47" (3/3) ... [2020-10-16 12:30:47,064 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-16 12:30:47,090 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:30:47,091 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:30:47,101 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:30:47,103 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:30:47,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,140 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,141 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,158 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,165 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 12:30:47,179 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:30:47,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:30:47,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:30:47,198 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:30:47,199 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:30:47,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:30:47,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:30:47,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:30:47,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:30:47,212 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:30:47,212 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-16 12:30:47,214 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-16 12:30:47,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 12:30:47,266 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-16 12:30:47,267 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 12:30:47,275 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-16 12:30:47,280 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-16 12:30:48,207 INFO L132 LiptonReduction]: Checked pairs total: 14017 [2020-10-16 12:30:48,207 INFO L134 LiptonReduction]: Total number of compositions: 46 [2020-10-16 12:30:48,215 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 65 transitions, 152 flow [2020-10-16 12:30:48,270 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 797 states. [2020-10-16 12:30:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states. [2020-10-16 12:30:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:30:48,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:48,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:30:48,281 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash 13833324, now seen corresponding path program 1 times [2020-10-16 12:30:48,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:48,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159562930] [2020-10-16 12:30:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:48,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159562930] [2020-10-16 12:30:48,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:48,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:48,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2132499204] [2020-10-16 12:30:48,485 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:48,488 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:48,502 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:30:48,503 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:48,507 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:48,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:30:48,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:30:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:30:48,528 INFO L87 Difference]: Start difference. First operand 797 states. Second operand 2 states. [2020-10-16 12:30:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:48,566 INFO L93 Difference]: Finished difference Result 797 states and 2314 transitions. [2020-10-16 12:30:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:30:48,568 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 12:30:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:48,602 INFO L225 Difference]: With dead ends: 797 [2020-10-16 12:30:48,602 INFO L226 Difference]: Without dead ends: 758 [2020-10-16 12:30:48,604 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 [2020-10-16 12:30:48,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-16 12:30:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2020-10-16 12:30:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-16 12:30:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2229 transitions. [2020-10-16 12:30:48,732 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2229 transitions. Word has length 4 [2020-10-16 12:30:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:48,732 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 2229 transitions. [2020-10-16 12:30:48,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:30:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2229 transitions. [2020-10-16 12:30:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:30:48,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:48,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:48,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:30:48,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1620095088, now seen corresponding path program 1 times [2020-10-16 12:30:48,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:48,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105227536] [2020-10-16 12:30:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:48,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105227536] [2020-10-16 12:30:48,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:48,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:48,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2083876789] [2020-10-16 12:30:48,823 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:48,824 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:48,826 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 12:30:48,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:48,826 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:48,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:48,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:48,829 INFO L87 Difference]: Start difference. First operand 758 states and 2229 transitions. Second operand 3 states. [2020-10-16 12:30:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:48,867 INFO L93 Difference]: Finished difference Result 761 states and 2195 transitions. [2020-10-16 12:30:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:48,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:30:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:48,873 INFO L225 Difference]: With dead ends: 761 [2020-10-16 12:30:48,873 INFO L226 Difference]: Without dead ends: 635 [2020-10-16 12:30:48,874 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 [2020-10-16 12:30:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-16 12:30:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 617. [2020-10-16 12:30:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-16 12:30:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1829 transitions. [2020-10-16 12:30:48,917 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1829 transitions. Word has length 10 [2020-10-16 12:30:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 1829 transitions. [2020-10-16 12:30:48,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1829 transitions. [2020-10-16 12:30:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:30:48,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:48,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:48,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:30:48,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash -563128116, now seen corresponding path program 1 times [2020-10-16 12:30:48,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:48,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245149673] [2020-10-16 12:30:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:48,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245149673] [2020-10-16 12:30:48,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:48,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:48,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [894017009] [2020-10-16 12:30:48,982 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:48,983 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:48,984 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-16 12:30:48,984 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:48,984 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:48,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:48,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:48,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:48,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:48,986 INFO L87 Difference]: Start difference. First operand 617 states and 1829 transitions. Second operand 3 states. [2020-10-16 12:30:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,007 INFO L93 Difference]: Finished difference Result 596 states and 1750 transitions. [2020-10-16 12:30:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:49,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 12:30:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,011 INFO L225 Difference]: With dead ends: 596 [2020-10-16 12:30:49,011 INFO L226 Difference]: Without dead ends: 464 [2020-10-16 12:30:49,012 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 [2020-10-16 12:30:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-16 12:30:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-16 12:30:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-16 12:30:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1401 transitions. [2020-10-16 12:30:49,027 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1401 transitions. Word has length 12 [2020-10-16 12:30:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,028 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1401 transitions. [2020-10-16 12:30:49,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1401 transitions. [2020-10-16 12:30:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:30:49,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:30:49,033 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash -561689065, now seen corresponding path program 1 times [2020-10-16 12:30:49,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860251710] [2020-10-16 12:30:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860251710] [2020-10-16 12:30:49,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:49,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2118635072] [2020-10-16 12:30:49,084 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,085 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,090 INFO L258 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-10-16 12:30:49,090 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,110 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7524#(not (= 2 ~x~0))] [2020-10-16 12:30:49,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:30:49,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:30:49,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,112 INFO L87 Difference]: Start difference. First operand 464 states and 1401 transitions. Second operand 4 states. [2020-10-16 12:30:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,156 INFO L93 Difference]: Finished difference Result 1002 states and 2894 transitions. [2020-10-16 12:30:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:30:49,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-16 12:30:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,165 INFO L225 Difference]: With dead ends: 1002 [2020-10-16 12:30:49,165 INFO L226 Difference]: Without dead ends: 1002 [2020-10-16 12:30:49,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:30:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-16 12:30:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 602. [2020-10-16 12:30:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-10-16 12:30:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1834 transitions. [2020-10-16 12:30:49,204 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1834 transitions. Word has length 19 [2020-10-16 12:30:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,205 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 1834 transitions. [2020-10-16 12:30:49,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:30:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1834 transitions. [2020-10-16 12:30:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:30:49,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:30:49,209 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,210 INFO L82 PathProgramCache]: Analyzing trace with hash 417736639, now seen corresponding path program 1 times [2020-10-16 12:30:49,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690799838] [2020-10-16 12:30:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690799838] [2020-10-16 12:30:49,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:49,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1547271102] [2020-10-16 12:30:49,293 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,294 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,299 INFO L258 McrAutomatonBuilder]: Finished intersection with 56 states and 89 transitions. [2020-10-16 12:30:49,299 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,324 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:49,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:49,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:49,326 INFO L87 Difference]: Start difference. First operand 602 states and 1834 transitions. Second operand 3 states. [2020-10-16 12:30:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,374 INFO L93 Difference]: Finished difference Result 792 states and 2304 transitions. [2020-10-16 12:30:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:49,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 12:30:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,380 INFO L225 Difference]: With dead ends: 792 [2020-10-16 12:30:49,380 INFO L226 Difference]: Without dead ends: 620 [2020-10-16 12:30:49,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-16 12:30:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 574. [2020-10-16 12:30:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-10-16 12:30:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1659 transitions. [2020-10-16 12:30:49,399 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1659 transitions. Word has length 19 [2020-10-16 12:30:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,399 INFO L481 AbstractCegarLoop]: Abstraction has 574 states and 1659 transitions. [2020-10-16 12:30:49,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1659 transitions. [2020-10-16 12:30:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:30:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:30:49,401 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,402 INFO L82 PathProgramCache]: Analyzing trace with hash 962803841, now seen corresponding path program 2 times [2020-10-16 12:30:49,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007518918] [2020-10-16 12:30:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007518918] [2020-10-16 12:30:49,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:49,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [60159130] [2020-10-16 12:30:49,443 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,444 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,446 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 73 transitions. [2020-10-16 12:30:49,447 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,467 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:49,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:49,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:49,468 INFO L87 Difference]: Start difference. First operand 574 states and 1659 transitions. Second operand 3 states. [2020-10-16 12:30:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,509 INFO L93 Difference]: Finished difference Result 512 states and 1350 transitions. [2020-10-16 12:30:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:49,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 12:30:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,512 INFO L225 Difference]: With dead ends: 512 [2020-10-16 12:30:49,513 INFO L226 Difference]: Without dead ends: 322 [2020-10-16 12:30:49,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-16 12:30:49,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 284. [2020-10-16 12:30:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-16 12:30:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 670 transitions. [2020-10-16 12:30:49,522 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 670 transitions. Word has length 19 [2020-10-16 12:30:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,523 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 670 transitions. [2020-10-16 12:30:49,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 670 transitions. [2020-10-16 12:30:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:30:49,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,524 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] [2020-10-16 12:30:49,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:30:49,525 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,525 INFO L82 PathProgramCache]: Analyzing trace with hash -95552411, now seen corresponding path program 1 times [2020-10-16 12:30:49,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537702891] [2020-10-16 12:30:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537702891] [2020-10-16 12:30:49,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:49,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1595642488] [2020-10-16 12:30:49,561 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,563 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,568 INFO L258 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-10-16 12:30:49,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,606 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12763#(<= 1 ~b2~0)] [2020-10-16 12:30:49,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:30:49,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:30:49,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,607 INFO L87 Difference]: Start difference. First operand 284 states and 670 transitions. Second operand 4 states. [2020-10-16 12:30:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,626 INFO L93 Difference]: Finished difference Result 286 states and 665 transitions. [2020-10-16 12:30:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:30:49,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-16 12:30:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,629 INFO L225 Difference]: With dead ends: 286 [2020-10-16 12:30:49,629 INFO L226 Difference]: Without dead ends: 250 [2020-10-16 12:30:49,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-16 12:30:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-16 12:30:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-16 12:30:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 583 transitions. [2020-10-16 12:30:49,638 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 583 transitions. Word has length 22 [2020-10-16 12:30:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,638 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 583 transitions. [2020-10-16 12:30:49,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:30:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 583 transitions. [2020-10-16 12:30:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:30:49,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,640 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] [2020-10-16 12:30:49,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:30:49,640 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1640844081, now seen corresponding path program 1 times [2020-10-16 12:30:49,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138935964] [2020-10-16 12:30:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138935964] [2020-10-16 12:30:49,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:49,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [974069182] [2020-10-16 12:30:49,674 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,675 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,680 INFO L258 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-10-16 12:30:49,680 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,703 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13553#(<= 1 ~b1~0)] [2020-10-16 12:30:49,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:30:49,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:30:49,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,705 INFO L87 Difference]: Start difference. First operand 250 states and 583 transitions. Second operand 4 states. [2020-10-16 12:30:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,720 INFO L93 Difference]: Finished difference Result 158 states and 401 transitions. [2020-10-16 12:30:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:49,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-16 12:30:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,721 INFO L225 Difference]: With dead ends: 158 [2020-10-16 12:30:49,721 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:30:49,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:30:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:30:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:30:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:30:49,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-16 12:30:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,723 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:30:49,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:30:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:30:49,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:30:49,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:30:49,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:30:49 BasicIcfg [2020-10-16 12:30:49,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:30:49,739 INFO L168 Benchmark]: Toolchain (without parser) took 3881.73 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 100.9 MB in the beginning and 219.8 MB in the end (delta: -118.8 MB). Peak memory consumption was 127.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,740 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.93 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 161.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.12 ms. Allocated memory is still 201.9 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,743 INFO L168 Benchmark]: Boogie Preprocessor took 29.55 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 158.2 MB in the end (delta: 975.4 kB). Peak memory consumption was 975.4 kB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,743 INFO L168 Benchmark]: RCFGBuilder took 476.86 ms. Allocated memory is still 201.9 MB. Free memory was 157.2 MB in the beginning and 133.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,744 INFO L168 Benchmark]: TraceAbstraction took 2684.98 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 133.4 MB in the beginning and 219.8 MB in the end (delta: -86.3 MB). Peak memory consumption was 97.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.93 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 161.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.12 ms. Allocated memory is still 201.9 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.55 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 158.2 MB in the end (delta: 975.4 kB). Peak memory consumption was 975.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 476.86 ms. Allocated memory is still 201.9 MB. Free memory was 157.2 MB in the beginning and 133.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2684.98 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 133.4 MB in the beginning and 219.8 MB in the end (delta: -86.3 MB). Peak memory consumption was 97.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1275 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 516 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 84 PlacesBefore, 54 PlacesAfterwards, 103 TransitionsBefore, 65 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 46 TotalNumberOfCompositions, 14017 MoverChecksTotal - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: 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, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 546 SDtfs, 259 SDslu, 325 SDs, 0 SdLazy, 99 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 142 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=797occurred 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 502 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 3491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...