/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:05:05,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:05:05,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:05:05,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:05:05,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:05:05,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:05:05,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:05:05,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:05:05,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:05:05,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:05:05,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:05:05,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:05:05,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:05:05,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:05:05,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:05:05,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:05:05,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:05:05,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:05:05,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:05:05,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:05:05,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:05:05,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:05:05,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:05:05,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:05:05,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:05:05,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:05:05,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:05:05,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:05:05,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:05:05,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:05:05,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:05:05,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:05:05,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:05:05,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:05:05,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:05:05,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:05:05,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:05:05,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:05:05,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:05:05,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:05:05,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:05:05,277 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-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:05:05,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:05:05,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:05:05,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:05:05,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:05:05,318 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:05:05,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:05:05,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:05:05,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:05:05,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:05:05,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:05:05,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:05:05,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:05:05,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:05:05,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:05:05,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:05:05,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:05:05,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:05:05,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:05:05,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:05:05,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:05:05,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:05:05,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:05:05,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:05:05,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:05:05,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:05:05,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:05:05,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:05:05,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:05:05,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:05:05,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:05:05,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:05:05,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:05:05,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:05:05,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:05:05,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-16 05:05:05,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb66efcb/b3272f3c7bfc46558580785e1a90df89/FLAG1236bd6a2 [2020-10-16 05:05:06,242 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:05:06,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-16 05:05:06,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb66efcb/b3272f3c7bfc46558580785e1a90df89/FLAG1236bd6a2 [2020-10-16 05:05:06,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb66efcb/b3272f3c7bfc46558580785e1a90df89 [2020-10-16 05:05:06,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:05:06,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:05:06,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:05:06,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:05:06,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:05:06,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:05:06" (1/1) ... [2020-10-16 05:05:06,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:06, skipping insertion in model container [2020-10-16 05:05:06,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:05:06" (1/1) ... [2020-10-16 05:05:06,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:05:06,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:05:07,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:05:07,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:05:07,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:05:07,271 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:05:07,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07 WrapperNode [2020-10-16 05:05:07,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:05:07,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:05:07,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:05:07,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:05:07,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:05:07,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:05:07,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:05:07,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:05:07,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (1/1) ... [2020-10-16 05:05:07,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:05:07,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:05:07,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:05:07,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:05:07,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (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 [2020-10-16 05:05:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:05:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:05:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:05:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:05:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:05:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:05:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:05:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:05:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:05:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:05:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 05:05:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 05:05:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:05:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:05:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:05:07,424 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:05:07,807 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:05:07,807 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:05:07,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:05:07 BoogieIcfgContainer [2020-10-16 05:05:07,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:05:07,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:05:07,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:05:07,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:05:07,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:05:06" (1/3) ... [2020-10-16 05:05:07,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108f9905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:05:07, skipping insertion in model container [2020-10-16 05:05:07,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:07" (2/3) ... [2020-10-16 05:05:07,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108f9905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:05:07, skipping insertion in model container [2020-10-16 05:05:07,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:05:07" (3/3) ... [2020-10-16 05:05:07,820 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-10-16 05:05:07,840 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:05:07,848 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:05:07,849 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:05:07,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,895 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,895 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,896 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,896 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,897 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,897 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,897 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,899 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,899 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,900 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,900 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,900 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,900 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,904 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,904 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,905 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,905 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,910 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,913 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,913 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,916 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,916 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:07,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:05:07,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:05:07,954 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:05:07,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:05:07,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:05:07,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:05:07,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:05:07,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:05:07,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:05:07,970 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 05:05:08,020 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 05:05:08,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:08,026 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 05:05:08,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 05:05:08,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:08,035 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:05:08,038 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:08,041 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:08,041 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:08,064 INFO L129 PetriNetUnfolder]: 1/63 cut-off events. [2020-10-16 05:05:08,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:08,066 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 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. [2020-10-16 05:05:08,068 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 05:05:09,650 INFO L132 LiptonReduction]: Checked pairs total: 2211 [2020-10-16 05:05:09,651 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 05:05:09,654 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1621 [2020-10-16 05:05:09,664 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:05:09,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:09,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:09,665 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:09,666 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:09,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:09,672 INFO L82 PathProgramCache]: Analyzing trace with hash 599542484, now seen corresponding path program 1 times [2020-10-16 05:05:09,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:09,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171426489] [2020-10-16 05:05:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:09,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171426489] [2020-10-16 05:05:09,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:09,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:09,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825577522] [2020-10-16 05:05:09,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:09,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:09,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:09,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:09,976 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 05:05:09,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states. [2020-10-16 05:05:09,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:09,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 05:05:09,980 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,014 INFO L129 PetriNetUnfolder]: 12/47 cut-off events. [2020-10-16 05:05:10,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:10,015 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 47 events. 12/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 2 based on Foata normal form. 8/51 useless extension candidates. Maximal degree in co-relation 76. Up to 25 conditions per place. [2020-10-16 05:05:10,017 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:05:10,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 74 flow [2020-10-16 05:05:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2020-10-16 05:05:10,034 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8556430446194225 [2020-10-16 05:05:10,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2020-10-16 05:05:10,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2020-10-16 05:05:10,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2020-10-16 05:05:10,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:10,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:10,052 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:10,054 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 326 transitions. [2020-10-16 05:05:10,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 74 flow [2020-10-16 05:05:10,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:10,061 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2020-10-16 05:05:10,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2020-10-16 05:05:10,065 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 05:05:10,065 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2020-10-16 05:05:10,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:10,065 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,066 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:05:10,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1405922977, now seen corresponding path program 1 times [2020-10-16 05:05:10,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194700445] [2020-10-16 05:05:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194700445] [2020-10-16 05:05:10,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:10,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477342855] [2020-10-16 05:05:10,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:10,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:10,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:10,137 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 05:05:10,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states. [2020-10-16 05:05:10,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 05:05:10,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,158 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 05:05:10,158 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:05:10,158 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 3/28 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 1 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 05:05:10,159 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:05:10,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 73 flow [2020-10-16 05:05:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 05:05:10,167 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 05:05:10,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 05:05:10,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 05:05:10,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 05:05:10,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:10,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:10,174 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:10,174 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states and 328 transitions. [2020-10-16 05:05:10,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 73 flow [2020-10-16 05:05:10,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:10,176 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 72 flow [2020-10-16 05:05:10,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2020-10-16 05:05:10,177 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2020-10-16 05:05:10,178 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 72 flow [2020-10-16 05:05:10,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:10,178 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,178 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:05:10,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,179 INFO L82 PathProgramCache]: Analyzing trace with hash 633938633, now seen corresponding path program 1 times [2020-10-16 05:05:10,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582907841] [2020-10-16 05:05:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582907841] [2020-10-16 05:05:10,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085022574] [2020-10-16 05:05:10,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:10,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:10,268 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 05:05:10,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states. [2020-10-16 05:05:10,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 05:05:10,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,281 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 05:05:10,282 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2020-10-16 05:05:10,282 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 28 events. 3/28 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2020-10-16 05:05:10,283 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:05:10,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 78 flow [2020-10-16 05:05:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 05:05:10,285 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 05:05:10,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 05:05:10,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 05:05:10,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 05:05:10,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:10,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:10,288 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:10,289 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states and 328 transitions. [2020-10-16 05:05:10,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 78 flow [2020-10-16 05:05:10,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:10,290 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 76 flow [2020-10-16 05:05:10,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 05:05:10,291 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 05:05:10,291 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 76 flow [2020-10-16 05:05:10,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:10,291 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,292 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:05:10,292 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1799443888, now seen corresponding path program 1 times [2020-10-16 05:05:10,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127688288] [2020-10-16 05:05:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127688288] [2020-10-16 05:05:10,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:10,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315299884] [2020-10-16 05:05:10,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:10,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:10,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:10,330 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 05:05:10,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states. [2020-10-16 05:05:10,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 05:05:10,331 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,358 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2020-10-16 05:05:10,358 INFO L130 PetriNetUnfolder]: For 27/38 co-relation queries the response was YES. [2020-10-16 05:05:10,359 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 41 events. 4/41 cut-off events. For 27/38 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 2 based on Foata normal form. 5/44 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 05:05:10,360 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:05:10,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 95 flow [2020-10-16 05:05:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2020-10-16 05:05:10,362 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2020-10-16 05:05:10,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2020-10-16 05:05:10,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2020-10-16 05:05:10,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2020-10-16 05:05:10,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:10,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:10,365 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:10,365 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states and 323 transitions. [2020-10-16 05:05:10,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 95 flow [2020-10-16 05:05:10,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:10,367 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 83 flow [2020-10-16 05:05:10,367 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2020-10-16 05:05:10,368 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2020-10-16 05:05:10,368 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 83 flow [2020-10-16 05:05:10,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:10,368 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,368 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:05:10,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1823517868, now seen corresponding path program 1 times [2020-10-16 05:05:10,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931998677] [2020-10-16 05:05:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931998677] [2020-10-16 05:05:10,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:10,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976683720] [2020-10-16 05:05:10,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:10,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:10,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:10,420 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 05:05:10,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states. [2020-10-16 05:05:10,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 05:05:10,421 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,469 INFO L129 PetriNetUnfolder]: 8/72 cut-off events. [2020-10-16 05:05:10,469 INFO L130 PetriNetUnfolder]: For 164/197 co-relation queries the response was YES. [2020-10-16 05:05:10,471 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 72 events. 8/72 cut-off events. For 164/197 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 309 event pairs, 0 based on Foata normal form. 5/73 useless extension candidates. Maximal degree in co-relation 164. Up to 23 conditions per place. [2020-10-16 05:05:10,472 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-10-16 05:05:10,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 114 flow [2020-10-16 05:05:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2020-10-16 05:05:10,474 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8267716535433071 [2020-10-16 05:05:10,475 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2020-10-16 05:05:10,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2020-10-16 05:05:10,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2020-10-16 05:05:10,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:10,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:10,478 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:10,478 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states and 420 transitions. [2020-10-16 05:05:10,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 114 flow [2020-10-16 05:05:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:10,481 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 104 flow [2020-10-16 05:05:10,481 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2020-10-16 05:05:10,481 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 05:05:10,481 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 104 flow [2020-10-16 05:05:10,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:10,482 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,482 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:05:10,482 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash -229681398, now seen corresponding path program 1 times [2020-10-16 05:05:10,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156745679] [2020-10-16 05:05:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156745679] [2020-10-16 05:05:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:10,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140100202] [2020-10-16 05:05:10,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:10,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:10,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:10,528 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 05:05:10,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states. [2020-10-16 05:05:10,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 05:05:10,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,568 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2020-10-16 05:05:10,569 INFO L130 PetriNetUnfolder]: For 264/298 co-relation queries the response was YES. [2020-10-16 05:05:10,569 INFO L80 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 64 events. 0/64 cut-off events. For 264/298 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 0 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2020-10-16 05:05:10,569 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2020-10-16 05:05:10,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 132 flow [2020-10-16 05:05:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2020-10-16 05:05:10,572 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8204724409448819 [2020-10-16 05:05:10,572 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2020-10-16 05:05:10,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2020-10-16 05:05:10,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2020-10-16 05:05:10,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:10,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:10,576 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:10,576 INFO L185 Difference]: Start difference. First operand has 40 places, 24 transitions, 104 flow. Second operand 5 states and 521 transitions. [2020-10-16 05:05:10,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 132 flow [2020-10-16 05:05:10,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 123 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:10,579 INFO L241 Difference]: Finished difference. Result has 45 places, 24 transitions, 114 flow [2020-10-16 05:05:10,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2020-10-16 05:05:10,579 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2020-10-16 05:05:10,580 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 114 flow [2020-10-16 05:05:10,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:10,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,580 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:05:10,581 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,581 INFO L82 PathProgramCache]: Analyzing trace with hash -906516652, now seen corresponding path program 1 times [2020-10-16 05:05:10,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701818420] [2020-10-16 05:05:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701818420] [2020-10-16 05:05:10,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:10,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759157004] [2020-10-16 05:05:10,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:10,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:10,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:10,653 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2020-10-16 05:05:10,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 114 flow. Second operand 4 states. [2020-10-16 05:05:10,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2020-10-16 05:05:10,654 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,705 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-10-16 05:05:10,705 INFO L130 PetriNetUnfolder]: For 306/346 co-relation queries the response was YES. [2020-10-16 05:05:10,709 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 78 events. 2/78 cut-off events. For 306/346 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 373 event pairs, 0 based on Foata normal form. 5/79 useless extension candidates. Maximal degree in co-relation 199. Up to 18 conditions per place. [2020-10-16 05:05:10,710 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 4 changer transitions 2/27 dead transitions. [2020-10-16 05:05:10,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 27 transitions, 147 flow [2020-10-16 05:05:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2020-10-16 05:05:10,712 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8169291338582677 [2020-10-16 05:05:10,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2020-10-16 05:05:10,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2020-10-16 05:05:10,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2020-10-16 05:05:10,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:10,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:10,716 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:10,716 INFO L185 Difference]: Start difference. First operand has 45 places, 24 transitions, 114 flow. Second operand 4 states and 415 transitions. [2020-10-16 05:05:10,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 27 transitions, 147 flow [2020-10-16 05:05:10,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 27 transitions, 138 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 05:05:10,724 INFO L241 Difference]: Finished difference. Result has 44 places, 24 transitions, 118 flow [2020-10-16 05:05:10,724 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2020-10-16 05:05:10,724 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2020-10-16 05:05:10,725 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 118 flow [2020-10-16 05:05:10,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:10,725 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,725 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:05:10,725 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,726 INFO L82 PathProgramCache]: Analyzing trace with hash -694474856, now seen corresponding path program 2 times [2020-10-16 05:05:10,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11426284] [2020-10-16 05:05:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:10,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11426284] [2020-10-16 05:05:10,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:10,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:10,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882861369] [2020-10-16 05:05:10,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:10,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:10,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:10,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:10,827 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:10,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 118 flow. Second operand 4 states. [2020-10-16 05:05:10,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:10,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:10,828 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:10,928 INFO L129 PetriNetUnfolder]: 248/471 cut-off events. [2020-10-16 05:05:10,928 INFO L130 PetriNetUnfolder]: For 1344/1434 co-relation queries the response was YES. [2020-10-16 05:05:10,931 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 471 events. 248/471 cut-off events. For 1344/1434 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2660 event pairs, 120 based on Foata normal form. 24/459 useless extension candidates. Maximal degree in co-relation 1092. Up to 328 conditions per place. [2020-10-16 05:05:10,933 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 5 changer transitions 9/37 dead transitions. [2020-10-16 05:05:10,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 184 flow [2020-10-16 05:05:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2020-10-16 05:05:10,935 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7748031496062993 [2020-10-16 05:05:10,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2020-10-16 05:05:10,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2020-10-16 05:05:10,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:10,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2020-10-16 05:05:10,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:10,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:10,939 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:10,939 INFO L185 Difference]: Start difference. First operand has 44 places, 24 transitions, 118 flow. Second operand 5 states and 492 transitions. [2020-10-16 05:05:10,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 184 flow [2020-10-16 05:05:10,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 172 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:10,942 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 151 flow [2020-10-16 05:05:10,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2020-10-16 05:05:10,942 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2020-10-16 05:05:10,943 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 151 flow [2020-10-16 05:05:10,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:10,943 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:10,943 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:10,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:05:10,943 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:10,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:10,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1145659892, now seen corresponding path program 1 times [2020-10-16 05:05:10,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:10,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440983294] [2020-10-16 05:05:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:11,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440983294] [2020-10-16 05:05:11,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:11,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:11,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670476937] [2020-10-16 05:05:11,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:05:11,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:05:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:05:11,007 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:11,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 151 flow. Second operand 5 states. [2020-10-16 05:05:11,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:11,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:11,008 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:11,110 INFO L129 PetriNetUnfolder]: 174/357 cut-off events. [2020-10-16 05:05:11,110 INFO L130 PetriNetUnfolder]: For 1288/1686 co-relation queries the response was YES. [2020-10-16 05:05:11,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 357 events. 174/357 cut-off events. For 1288/1686 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1899 event pairs, 30 based on Foata normal form. 58/397 useless extension candidates. Maximal degree in co-relation 1388. Up to 316 conditions per place. [2020-10-16 05:05:11,114 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 9 changer transitions 9/41 dead transitions. [2020-10-16 05:05:11,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 275 flow [2020-10-16 05:05:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:05:11,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:05:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2020-10-16 05:05:11,117 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7742782152230971 [2020-10-16 05:05:11,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2020-10-16 05:05:11,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2020-10-16 05:05:11,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:11,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2020-10-16 05:05:11,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:05:11,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:05:11,121 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:05:11,121 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 151 flow. Second operand 6 states and 590 transitions. [2020-10-16 05:05:11,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 275 flow [2020-10-16 05:05:11,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 268 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:11,125 INFO L241 Difference]: Finished difference. Result has 51 places, 32 transitions, 216 flow [2020-10-16 05:05:11,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2020-10-16 05:05:11,126 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2020-10-16 05:05:11,126 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 216 flow [2020-10-16 05:05:11,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:05:11,126 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:11,127 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:11,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:05:11,127 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:11,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1401255375, now seen corresponding path program 1 times [2020-10-16 05:05:11,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:11,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567382070] [2020-10-16 05:05:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:11,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567382070] [2020-10-16 05:05:11,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:11,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:05:11,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983575618] [2020-10-16 05:05:11,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:05:11,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:11,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:05:11,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:05:11,247 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:11,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 216 flow. Second operand 6 states. [2020-10-16 05:05:11,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:11,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:11,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:11,373 INFO L129 PetriNetUnfolder]: 102/230 cut-off events. [2020-10-16 05:05:11,373 INFO L130 PetriNetUnfolder]: For 1012/1320 co-relation queries the response was YES. [2020-10-16 05:05:11,375 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 230 events. 102/230 cut-off events. For 1012/1320 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1123 event pairs, 3 based on Foata normal form. 65/284 useless extension candidates. Maximal degree in co-relation 1207. Up to 204 conditions per place. [2020-10-16 05:05:11,376 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 4 selfloop transitions, 13 changer transitions 11/45 dead transitions. [2020-10-16 05:05:11,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 398 flow [2020-10-16 05:05:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:05:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:05:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2020-10-16 05:05:11,379 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7739032620922385 [2020-10-16 05:05:11,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2020-10-16 05:05:11,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2020-10-16 05:05:11,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:11,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2020-10-16 05:05:11,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:05:11,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:05:11,385 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:05:11,385 INFO L185 Difference]: Start difference. First operand has 51 places, 32 transitions, 216 flow. Second operand 7 states and 688 transitions. [2020-10-16 05:05:11,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 398 flow [2020-10-16 05:05:11,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 336 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:11,394 INFO L241 Difference]: Finished difference. Result has 54 places, 34 transitions, 242 flow [2020-10-16 05:05:11,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2020-10-16 05:05:11,395 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2020-10-16 05:05:11,395 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 242 flow [2020-10-16 05:05:11,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:05:11,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:11,396 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:11,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:05:11,396 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1574286883, now seen corresponding path program 1 times [2020-10-16 05:05:11,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:11,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551449364] [2020-10-16 05:05:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:11,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551449364] [2020-10-16 05:05:11,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:11,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:05:11,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545364688] [2020-10-16 05:05:11,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:05:11,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:05:11,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:05:11,518 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:11,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 242 flow. Second operand 7 states. [2020-10-16 05:05:11,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:11,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:11,519 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:11,601 INFO L129 PetriNetUnfolder]: 52/141 cut-off events. [2020-10-16 05:05:11,601 INFO L130 PetriNetUnfolder]: For 587/843 co-relation queries the response was YES. [2020-10-16 05:05:11,602 INFO L80 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 141 events. 52/141 cut-off events. For 587/843 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 630 event pairs, 0 based on Foata normal form. 67/197 useless extension candidates. Maximal degree in co-relation 715. Up to 108 conditions per place. [2020-10-16 05:05:11,602 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2020-10-16 05:05:11,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 292 flow [2020-10-16 05:05:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 05:05:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 05:05:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 772 transitions. [2020-10-16 05:05:11,606 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7598425196850394 [2020-10-16 05:05:11,606 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 772 transitions. [2020-10-16 05:05:11,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 772 transitions. [2020-10-16 05:05:11,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:11,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 772 transitions. [2020-10-16 05:05:11,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 05:05:11,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 05:05:11,611 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 05:05:11,611 INFO L185 Difference]: Start difference. First operand has 54 places, 34 transitions, 242 flow. Second operand 8 states and 772 transitions. [2020-10-16 05:05:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 292 flow [2020-10-16 05:05:11,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 227 flow, removed 20 selfloop flow, removed 8 redundant places. [2020-10-16 05:05:11,616 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2020-10-16 05:05:11,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2020-10-16 05:05:11,617 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2020-10-16 05:05:11,617 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2020-10-16 05:05:11,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:05:11,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:05:11,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:05:11 BasicIcfg [2020-10-16 05:05:11,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:05:11,627 INFO L168 Benchmark]: Toolchain (without parser) took 5064.78 ms. Allocated memory was 254.3 MB in the beginning and 424.7 MB in the end (delta: 170.4 MB). Free memory was 209.4 MB in the beginning and 325.9 MB in the end (delta: -116.5 MB). Peak memory consumption was 53.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:11,627 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 254.3 MB. Free memory is still 230.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:05:11,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.64 ms. Allocated memory was 254.3 MB in the beginning and 324.5 MB in the end (delta: 70.3 MB). Free memory was 209.4 MB in the beginning and 277.9 MB in the end (delta: -68.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:11,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 324.5 MB. Free memory was 277.9 MB in the beginning and 275.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:11,634 INFO L168 Benchmark]: Boogie Preprocessor took 25.83 ms. Allocated memory is still 324.5 MB. Free memory was 275.4 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:11,635 INFO L168 Benchmark]: RCFGBuilder took 464.00 ms. Allocated memory is still 324.5 MB. Free memory was 272.8 MB in the beginning and 248.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:11,636 INFO L168 Benchmark]: TraceAbstraction took 3812.11 ms. Allocated memory was 324.5 MB in the beginning and 424.7 MB in the end (delta: 100.1 MB). Free memory was 248.5 MB in the beginning and 325.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:11,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 254.3 MB. Free memory is still 230.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 709.64 ms. Allocated memory was 254.3 MB in the beginning and 324.5 MB in the end (delta: 70.3 MB). Free memory was 209.4 MB in the beginning and 277.9 MB in the end (delta: -68.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 324.5 MB. Free memory was 277.9 MB in the beginning and 275.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.83 ms. Allocated memory is still 324.5 MB. Free memory was 275.4 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 464.00 ms. Allocated memory is still 324.5 MB. Free memory was 272.8 MB in the beginning and 248.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3812.11 ms. Allocated memory was 324.5 MB in the beginning and 424.7 MB in the end (delta: 100.1 MB). Free memory was 248.5 MB in the beginning and 325.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 821 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 75 PlacesBefore, 33 PlacesAfterwards, 63 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 2211 MoverChecksTotal - 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 43 SDtfs, 26 SDslu, 21 SDs, 0 SdLazy, 203 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 5479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...