/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:57:32,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:57:32,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:57:32,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:57:32,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:57:32,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:57:32,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:57:32,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:57:32,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:57:32,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:57:32,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:57:32,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:57:32,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:57:32,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:57:32,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:57:32,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:57:32,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:57:32,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:57:32,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:57:32,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:57:32,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:57:32,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:57:32,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:57:32,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:57:32,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:57:32,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:57:32,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:57:32,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:57:32,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:57:32,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:57:32,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:57:32,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:57:32,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:57:32,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:57:32,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:57:32,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:57:32,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:57:32,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:57:32,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:57:32,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:57:32,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:57:32,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 21:57:32,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:57:32,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:57:32,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:57:32,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:57:32,088 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:57:32,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:57:32,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:57:32,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:57:32,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:57:32,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:57:32,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:57:32,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:57:32,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:57:32,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:57:32,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:57:32,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:57:32,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:57:32,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:57:32,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:57:32,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:57:32,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:57:32,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:57:32,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:57:32,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:57:32,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:57:32,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:57:32,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:57:32,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:57:32,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:57:32,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:57:32,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:57:32,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:57:32,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:57:32,408 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:57:32,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-17 21:57:32,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1036dcc73/c8975dfa9433445f956682ad87287f98/FLAG2a6fee58e [2020-04-17 21:57:33,105 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:57:33,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-17 21:57:33,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1036dcc73/c8975dfa9433445f956682ad87287f98/FLAG2a6fee58e [2020-04-17 21:57:33,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1036dcc73/c8975dfa9433445f956682ad87287f98 [2020-04-17 21:57:33,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:57:33,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:57:33,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:57:33,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:57:33,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:57:33,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:33,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f33b2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33, skipping insertion in model container [2020-04-17 21:57:33,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:33,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:57:33,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:57:33,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:57:33,968 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:57:34,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:57:34,100 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:57:34,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34 WrapperNode [2020-04-17 21:57:34,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:57:34,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:57:34,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:57:34,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:57:34,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:57:34,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:57:34,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:57:34,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:57:34,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (1/1) ... [2020-04-17 21:57:34,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:57:34,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:57:34,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:57:34,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:57:34,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (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 [2020-04-17 21:57:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:57:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:57:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:57:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:57:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:57:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:57:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:57:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:57:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:57:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:57:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:57:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:57:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:57:34,260 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:57:34,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:57:34,677 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:57:34,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:57:34 BoogieIcfgContainer [2020-04-17 21:57:34,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:57:34,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:57:34,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:57:34,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:57:34,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:57:33" (1/3) ... [2020-04-17 21:57:34,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e33343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:57:34, skipping insertion in model container [2020-04-17 21:57:34,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:34" (2/3) ... [2020-04-17 21:57:34,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e33343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:57:34, skipping insertion in model container [2020-04-17 21:57:34,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:57:34" (3/3) ... [2020-04-17 21:57:34,690 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-04-17 21:57:34,698 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:57:34,698 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:57:34,705 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:57:34,706 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:57:34,735 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,736 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,736 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,738 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,739 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,739 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,740 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,740 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,740 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,740 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,741 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,742 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,742 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,742 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,743 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,743 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,744 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,744 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,750 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,750 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,750 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,751 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,758 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,758 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,759 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,759 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,762 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,763 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,763 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,763 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:57:34,810 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:57:34,811 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:57:34,811 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:57:34,811 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:57:34,811 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:57:34,811 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:57:34,811 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:57:34,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:57:34,828 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-17 21:57:34,831 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 21:57:34,882 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 21:57:34,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:57:34,890 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 21:57:34,895 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 21:57:34,942 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 21:57:34,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:57:34,944 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 21:57:34,947 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-17 21:57:34,948 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:57:36,417 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 21:57:36,706 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-17 21:57:36,756 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-17 21:57:36,757 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-17 21:57:36,760 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 21:57:36,782 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-17 21:57:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-17 21:57:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:57:36,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:36,793 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:36,794 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-17 21:57:36,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:36,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579752221] [2020-04-17 21:57:36,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579752221] [2020-04-17 21:57:37,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:57:37,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201615472] [2020-04-17 21:57:37,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:37,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,057 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-17 21:57:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,136 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2020-04-17 21:57:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:37,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:57:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,163 INFO L225 Difference]: With dead ends: 226 [2020-04-17 21:57:37,163 INFO L226 Difference]: Without dead ends: 178 [2020-04-17 21:57:37,164 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-17 21:57:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-17 21:57:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-17 21:57:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 474 transitions. [2020-04-17 21:57:37,237 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 474 transitions. Word has length 8 [2020-04-17 21:57:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,238 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 474 transitions. [2020-04-17 21:57:37,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:37,238 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 474 transitions. [2020-04-17 21:57:37,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:57:37,240 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,240 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 1 times [2020-04-17 21:57:37,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982571395] [2020-04-17 21:57:37,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982571395] [2020-04-17 21:57:37,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:57:37,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690058370] [2020-04-17 21:57:37,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:37,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:37,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,298 INFO L87 Difference]: Start difference. First operand 178 states and 474 transitions. Second operand 3 states. [2020-04-17 21:57:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,308 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-04-17 21:57:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:37,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 21:57:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,311 INFO L225 Difference]: With dead ends: 168 [2020-04-17 21:57:37,311 INFO L226 Difference]: Without dead ends: 168 [2020-04-17 21:57:37,312 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-17 21:57:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-17 21:57:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-17 21:57:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-04-17 21:57:37,331 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-04-17 21:57:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,332 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-04-17 21:57:37,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-04-17 21:57:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:57:37,334 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,334 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-04-17 21:57:37,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319864962] [2020-04-17 21:57:37,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319864962] [2020-04-17 21:57:37,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957337564] [2020-04-17 21:57:37,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:37,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:37,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:37,413 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 4 states. [2020-04-17 21:57:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,444 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-04-17 21:57:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:57:37,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 21:57:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,447 INFO L225 Difference]: With dead ends: 240 [2020-04-17 21:57:37,447 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 21:57:37,448 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 21:57:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 21:57:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 21:57:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-04-17 21:57:37,461 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 10 [2020-04-17 21:57:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,462 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-04-17 21:57:37,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-04-17 21:57:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:57:37,463 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,463 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,463 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 2 times [2020-04-17 21:57:37,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812970427] [2020-04-17 21:57:37,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812970427] [2020-04-17 21:57:37,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:57:37,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596867416] [2020-04-17 21:57:37,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:37,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:37,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,555 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-04-17 21:57:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,563 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-04-17 21:57:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:37,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 21:57:37,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,565 INFO L225 Difference]: With dead ends: 132 [2020-04-17 21:57:37,566 INFO L226 Difference]: Without dead ends: 132 [2020-04-17 21:57:37,568 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-17 21:57:37,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-17 21:57:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-17 21:57:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-04-17 21:57:37,593 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-04-17 21:57:37,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,594 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-04-17 21:57:37,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-04-17 21:57:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:57:37,597 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,597 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,598 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-04-17 21:57:37,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77031089] [2020-04-17 21:57:37,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77031089] [2020-04-17 21:57:37,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771486701] [2020-04-17 21:57:37,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:37,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:37,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:37,678 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-04-17 21:57:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,698 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-04-17 21:57:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:57:37,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:57:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,700 INFO L225 Difference]: With dead ends: 144 [2020-04-17 21:57:37,700 INFO L226 Difference]: Without dead ends: 60 [2020-04-17 21:57:37,700 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-17 21:57:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-17 21:57:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-17 21:57:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-17 21:57:37,705 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-17 21:57:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,706 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-17 21:57:37,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-17 21:57:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:57:37,707 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,707 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,707 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-17 21:57:37,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649527833] [2020-04-17 21:57:37,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649527833] [2020-04-17 21:57:37,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715611731] [2020-04-17 21:57:37,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:37,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:37,781 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 4 states. [2020-04-17 21:57:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,822 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-17 21:57:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:37,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:57:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,823 INFO L225 Difference]: With dead ends: 73 [2020-04-17 21:57:37,823 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 21:57:37,823 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 21:57:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 21:57:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 21:57:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-17 21:57:37,830 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-17 21:57:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,830 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-17 21:57:37,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-17 21:57:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:57:37,831 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,831 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,832 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-17 21:57:37,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965541293] [2020-04-17 21:57:37,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:37,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965541293] [2020-04-17 21:57:37,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:57:37,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596084749] [2020-04-17 21:57:37,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:57:37,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:57:37,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:37,939 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 5 states. [2020-04-17 21:57:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,992 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-17 21:57:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:57:37,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 21:57:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,993 INFO L225 Difference]: With dead ends: 53 [2020-04-17 21:57:37,994 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 21:57:37,995 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 21:57:37,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 21:57:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 21:57:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-17 21:57:38,000 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-17 21:57:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:38,001 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-17 21:57:38,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:57:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-17 21:57:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:57:38,004 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:38,004 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:38,004 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-17 21:57:38,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:38,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093199337] [2020-04-17 21:57:38,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:38,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093199337] [2020-04-17 21:57:38,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:38,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:57:38,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984953295] [2020-04-17 21:57:38,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:57:38,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:38,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:57:38,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:38,079 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 6 states. [2020-04-17 21:57:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:38,124 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-17 21:57:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:57:38,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 21:57:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:38,124 INFO L225 Difference]: With dead ends: 35 [2020-04-17 21:57:38,125 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 21:57:38,125 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:57:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 21:57:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 21:57:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 21:57:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-17 21:57:38,129 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-17 21:57:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:38,129 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-17 21:57:38,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:57:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-17 21:57:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 21:57:38,131 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:38,131 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:38,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-17 21:57:38,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:38,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82455114] [2020-04-17 21:57:38,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:38,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82455114] [2020-04-17 21:57:38,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:38,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:38,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033885292] [2020-04-17 21:57:38,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:38,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:38,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:38,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:38,163 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-04-17 21:57:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:38,169 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-17 21:57:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:38,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 21:57:38,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:38,170 INFO L225 Difference]: With dead ends: 28 [2020-04-17 21:57:38,170 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:57:38,171 INFO L678 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 [2020-04-17 21:57:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:57:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:57:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:57:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:57:38,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 21:57:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:38,172 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:57:38,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:57:38,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:57:38,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:57:38 BasicIcfg [2020-04-17 21:57:38,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:57:38,179 INFO L168 Benchmark]: Toolchain (without parser) took 4839.50 ms. Allocated memory was 144.2 MB in the beginning and 250.6 MB in the end (delta: 106.4 MB). Free memory was 100.4 MB in the beginning and 196.8 MB in the end (delta: -96.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,179 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.64 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.4 MB in the beginning and 158.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,182 INFO L168 Benchmark]: Boogie Preprocessor took 31.87 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,182 INFO L168 Benchmark]: RCFGBuilder took 495.07 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 133.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,183 INFO L168 Benchmark]: TraceAbstraction took 3494.29 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 132.4 MB in the beginning and 196.8 MB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:57:38,187 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.64 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.4 MB in the beginning and 158.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.87 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.07 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 133.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3494.29 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 132.4 MB in the beginning and 196.8 MB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 144 SDtfs, 109 SDslu, 138 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 2742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...