/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 13:41:14,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 13:41:14,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 13:41:14,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 13:41:14,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 13:41:14,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 13:41:14,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 13:41:14,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 13:41:14,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 13:41:14,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 13:41:14,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 13:41:14,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 13:41:14,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 13:41:14,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 13:41:14,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 13:41:14,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 13:41:14,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 13:41:14,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 13:41:14,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 13:41:14,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 13:41:14,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 13:41:14,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 13:41:14,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 13:41:14,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 13:41:14,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 13:41:14,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 13:41:14,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 13:41:14,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 13:41:14,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 13:41:14,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 13:41:14,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 13:41:14,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 13:41:14,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 13:41:14,146 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 13:41:14,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 13:41:14,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 13:41:14,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 13:41:14,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 13:41:14,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 13:41:14,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 13:41:14,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 13:41:14,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 13:41:14,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 13:41:14,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 13:41:14,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 13:41:14,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 13:41:14,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 13:41:14,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 13:41:14,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 13:41:14,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 13:41:14,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:41:14,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 13:41:14,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 13:41:14,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 13:41:14,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 13:41:14,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 13:41:14,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 13:41:14,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 13:41:14,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 13:41:14,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 13:41:14,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 13:41:14,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 13:41:14,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 13:41:14,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 13:41:14,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-11 13:41:14,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47049e87e/30d1c366d7564c14884a7b86addcbf5d/FLAG82fd8633b [2020-10-11 13:41:15,079 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 13:41:15,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-11 13:41:15,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47049e87e/30d1c366d7564c14884a7b86addcbf5d/FLAG82fd8633b [2020-10-11 13:41:15,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47049e87e/30d1c366d7564c14884a7b86addcbf5d [2020-10-11 13:41:15,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 13:41:15,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 13:41:15,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 13:41:15,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 13:41:15,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 13:41:15,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:41:15" (1/1) ... [2020-10-11 13:41:15,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed19789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:15, skipping insertion in model container [2020-10-11 13:41:15,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:41:15" (1/1) ... [2020-10-11 13:41:15,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 13:41:15,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 13:41:15,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:41:15,959 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 13:41:16,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:41:16,131 INFO L208 MainTranslator]: Completed translation [2020-10-11 13:41:16,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16 WrapperNode [2020-10-11 13:41:16,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 13:41:16,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 13:41:16,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 13:41:16,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 13:41:16,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 13:41:16,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 13:41:16,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 13:41:16,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 13:41:16,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... [2020-10-11 13:41:16,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 13:41:16,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 13:41:16,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 13:41:16,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 13:41:16,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:41:16,350 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 13:41:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 13:41:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 13:41:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 13:41:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 13:41:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 13:41:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 13:41:16,356 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 13:41:16,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 13:41:16,726 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-11 13:41:16,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:41:16 BoogieIcfgContainer [2020-10-11 13:41:16,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 13:41:16,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 13:41:16,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 13:41:16,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 13:41:16,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:41:15" (1/3) ... [2020-10-11 13:41:16,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15308713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:41:16, skipping insertion in model container [2020-10-11 13:41:16,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:16" (2/3) ... [2020-10-11 13:41:16,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15308713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:41:16, skipping insertion in model container [2020-10-11 13:41:16,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:41:16" (3/3) ... [2020-10-11 13:41:16,738 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-10-11 13:41:16,749 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 13:41:16,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 13:41:16,758 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 13:41:16,759 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 13:41:16,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:16,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 13:41:16,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:41:16,826 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:41:16,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:41:16,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:41:16,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:41:16,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:41:16,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:41:16,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:41:16,840 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:41:16,842 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions, 169 flow [2020-10-11 13:41:16,844 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 82 transitions, 169 flow [2020-10-11 13:41:16,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-10-11 13:41:16,888 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-10-11 13:41:16,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 13:41:16,894 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-11 13:41:16,899 INFO L117 LiptonReduction]: Number of co-enabled transitions 2400 [2020-10-11 13:41:17,930 INFO L132 LiptonReduction]: Checked pairs total: 4233 [2020-10-11 13:41:17,930 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-11 13:41:17,938 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-10-11 13:41:17,960 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-10-11 13:41:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-11 13:41:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:41:17,972 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:17,973 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:17,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:17,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2020-10-11 13:41:17,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:17,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313380904] [2020-10-11 13:41:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313380904] [2020-10-11 13:41:18,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:41:18,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498432496] [2020-10-11 13:41:18,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 13:41:18,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 13:41:18,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 13:41:18,190 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-10-11 13:41:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:18,218 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-10-11 13:41:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 13:41:18,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-11 13:41:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:18,236 INFO L225 Difference]: With dead ends: 198 [2020-10-11 13:41:18,236 INFO L226 Difference]: Without dead ends: 198 [2020-10-11 13:41:18,238 INFO L673 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 [2020-10-11 13:41:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-11 13:41:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-11 13:41:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-11 13:41:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-10-11 13:41:18,305 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-10-11 13:41:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:18,305 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-10-11 13:41:18,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 13:41:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-10-11 13:41:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 13:41:18,307 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:18,307 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:18,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 13:41:18,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:18,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2020-10-11 13:41:18,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:18,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600897958] [2020-10-11 13:41:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600897958] [2020-10-11 13:41:18,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:41:18,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598908613] [2020-10-11 13:41:18,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:18,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,432 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-10-11 13:41:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:18,494 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-10-11 13:41:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:18,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-11 13:41:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:18,504 INFO L225 Difference]: With dead ends: 362 [2020-10-11 13:41:18,504 INFO L226 Difference]: Without dead ends: 362 [2020-10-11 13:41:18,507 INFO L673 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 [2020-10-11 13:41:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-11 13:41:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-10-11 13:41:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-11 13:41:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-10-11 13:41:18,556 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-10-11 13:41:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:18,556 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-10-11 13:41:18,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-10-11 13:41:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 13:41:18,557 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:18,558 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:18,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 13:41:18,561 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:18,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2020-10-11 13:41:18,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:18,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613513355] [2020-10-11 13:41:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613513355] [2020-10-11 13:41:18,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:41:18,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72723189] [2020-10-11 13:41:18,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:18,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:18,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,630 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-10-11 13:41:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:18,653 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-10-11 13:41:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:18,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-11 13:41:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:18,657 INFO L225 Difference]: With dead ends: 348 [2020-10-11 13:41:18,657 INFO L226 Difference]: Without dead ends: 348 [2020-10-11 13:41:18,658 INFO L673 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 [2020-10-11 13:41:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-11 13:41:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-10-11 13:41:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-11 13:41:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-10-11 13:41:18,672 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-10-11 13:41:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:18,673 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-10-11 13:41:18,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-10-11 13:41:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:41:18,675 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:18,675 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:18,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 13:41:18,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2020-10-11 13:41:18,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:18,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046828304] [2020-10-11 13:41:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046828304] [2020-10-11 13:41:18,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:18,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689407736] [2020-10-11 13:41:18,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:18,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:18,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,718 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-10-11 13:41:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:18,763 INFO L93 Difference]: Finished difference Result 220 states and 542 transitions. [2020-10-11 13:41:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:18,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-11 13:41:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:18,765 INFO L225 Difference]: With dead ends: 220 [2020-10-11 13:41:18,766 INFO L226 Difference]: Without dead ends: 220 [2020-10-11 13:41:18,766 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-11 13:41:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-11 13:41:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-11 13:41:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 542 transitions. [2020-10-11 13:41:18,778 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 542 transitions. Word has length 19 [2020-10-11 13:41:18,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:18,778 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 542 transitions. [2020-10-11 13:41:18,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:18,778 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 542 transitions. [2020-10-11 13:41:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:41:18,780 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:18,780 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:18,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 13:41:18,781 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:18,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:18,781 INFO L82 PathProgramCache]: Analyzing trace with hash 952506058, now seen corresponding path program 1 times [2020-10-11 13:41:18,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:18,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852680148] [2020-10-11 13:41:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852680148] [2020-10-11 13:41:18,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:18,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288456903] [2020-10-11 13:41:18,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:18,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:18,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,812 INFO L87 Difference]: Start difference. First operand 220 states and 542 transitions. Second operand 3 states. [2020-10-11 13:41:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:18,852 INFO L93 Difference]: Finished difference Result 240 states and 579 transitions. [2020-10-11 13:41:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:18,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-11 13:41:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:18,855 INFO L225 Difference]: With dead ends: 240 [2020-10-11 13:41:18,855 INFO L226 Difference]: Without dead ends: 240 [2020-10-11 13:41:18,855 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-11 13:41:18,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 230. [2020-10-11 13:41:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-11 13:41:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2020-10-11 13:41:18,865 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 19 [2020-10-11 13:41:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:18,866 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2020-10-11 13:41:18,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2020-10-11 13:41:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:41:18,868 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:18,868 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:18,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 13:41:18,868 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:18,869 INFO L82 PathProgramCache]: Analyzing trace with hash -687819132, now seen corresponding path program 2 times [2020-10-11 13:41:18,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:18,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004405762] [2020-10-11 13:41:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004405762] [2020-10-11 13:41:18,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:18,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265868989] [2020-10-11 13:41:18,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:18,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:18,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,897 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand 3 states. [2020-10-11 13:41:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:18,931 INFO L93 Difference]: Finished difference Result 228 states and 541 transitions. [2020-10-11 13:41:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:18,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-11 13:41:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:18,933 INFO L225 Difference]: With dead ends: 228 [2020-10-11 13:41:18,933 INFO L226 Difference]: Without dead ends: 228 [2020-10-11 13:41:18,934 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-11 13:41:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-11 13:41:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-11 13:41:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 541 transitions. [2020-10-11 13:41:18,942 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 541 transitions. Word has length 19 [2020-10-11 13:41:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:18,942 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 541 transitions. [2020-10-11 13:41:18,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 541 transitions. [2020-10-11 13:41:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:41:18,944 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:18,944 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:18,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 13:41:18,944 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash -36638496, now seen corresponding path program 3 times [2020-10-11 13:41:18,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:18,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559305624] [2020-10-11 13:41:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:18,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559305624] [2020-10-11 13:41:18,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:18,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:18,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730829338] [2020-10-11 13:41:18,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:18,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:18,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:18,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:18,971 INFO L87 Difference]: Start difference. First operand 228 states and 541 transitions. Second operand 3 states. [2020-10-11 13:41:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:19,016 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-11 13:41:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:19,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-11 13:41:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:19,017 INFO L225 Difference]: With dead ends: 194 [2020-10-11 13:41:19,017 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 13:41:19,017 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 13:41:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 13:41:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 13:41:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 13:41:19,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-11 13:41:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:19,019 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 13:41:19,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 13:41:19,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 13:41:19,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 13:41:19,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:41:19 BasicIcfg [2020-10-11 13:41:19,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 13:41:19,026 INFO L168 Benchmark]: Toolchain (without parser) took 3643.79 ms. Allocated memory was 252.2 MB in the beginning and 359.1 MB in the end (delta: 107.0 MB). Free memory was 206.1 MB in the beginning and 211.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 101.3 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:19,027 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:41:19,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.51 ms. Allocated memory was 252.2 MB in the beginning and 316.7 MB in the end (delta: 64.5 MB). Free memory was 206.1 MB in the beginning and 272.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:19,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.47 ms. Allocated memory is still 316.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:41:19,029 INFO L168 Benchmark]: Boogie Preprocessor took 60.67 ms. Allocated memory is still 316.7 MB. Free memory was 272.2 MB in the beginning and 269.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:19,030 INFO L168 Benchmark]: RCFGBuilder took 457.99 ms. Allocated memory is still 316.7 MB. Free memory was 269.7 MB in the beginning and 247.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:19,031 INFO L168 Benchmark]: TraceAbstraction took 2294.12 ms. Allocated memory was 316.7 MB in the beginning and 359.1 MB in the end (delta: 42.5 MB). Free memory was 247.9 MB in the beginning and 211.8 MB in the end (delta: 36.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:19,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 749.51 ms. Allocated memory was 252.2 MB in the beginning and 316.7 MB in the end (delta: 64.5 MB). Free memory was 206.1 MB in the beginning and 272.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 75.47 ms. Allocated memory is still 316.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 60.67 ms. Allocated memory is still 316.7 MB. Free memory was 272.2 MB in the beginning and 269.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 457.99 ms. Allocated memory is still 316.7 MB. Free memory was 269.7 MB in the beginning and 247.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2294.12 ms. Allocated memory was 316.7 MB in the beginning and 359.1 MB in the end (delta: 42.5 MB). Free memory was 247.9 MB in the beginning and 211.8 MB in the end (delta: 36.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1206 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 33 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 247 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 62 PlacesBefore, 35 PlacesAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 43 TotalNumberOfCompositions, 4233 MoverChecksTotal - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: 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 2 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 373 SDtfs, 152 SDslu, 134 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, 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, 281 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2248 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...