/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:27:00,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:27:00,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:27:00,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:27:00,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:27:00,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:27:00,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:27:00,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:27:00,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:27:00,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:27:00,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:27:00,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:27:00,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:27:00,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:27:00,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:27:00,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:27:00,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:27:00,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:27:00,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:27:00,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:27:00,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:27:00,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:27:00,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:27:00,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:27:00,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:27:00,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:27:00,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:27:00,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:27:00,303 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.epf [2021-03-11 20:27:00,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:27:00,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:27:00,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:27:00,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:27:00,342 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:27:00,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:27:00,342 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:27:00,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:27:00,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:27:00,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:27:00,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:27:00,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:27:00,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:27:00,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:27:00,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:27:00,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:27:00,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:27:00,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:27:00,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:27:00,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:27:00,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:27:00,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:27:00,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:27:00,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:27:00,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:27:00,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:27:00,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:27:00,683 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:27:00,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-03-11 20:27:00,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3eff869/d2ae65c8adf340f99401f31ae9b6bb18/FLAG9a9fc4148 [2021-03-11 20:27:01,249 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:27:01,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-03-11 20:27:01,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3eff869/d2ae65c8adf340f99401f31ae9b6bb18/FLAG9a9fc4148 [2021-03-11 20:27:01,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3eff869/d2ae65c8adf340f99401f31ae9b6bb18 [2021-03-11 20:27:01,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:27:01,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:27:01,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:27:01,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:27:01,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:27:01,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:27:01" (1/1) ... [2021-03-11 20:27:01,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0c996c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:01, skipping insertion in model container [2021-03-11 20:27:01,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:27:01" (1/1) ... [2021-03-11 20:27:01,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:27:01,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:27:01,905 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-03-11 20:27:02,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:27:02,049 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:27:02,058 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-03-11 20:27:02,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:27:02,130 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:27:02,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02 WrapperNode [2021-03-11 20:27:02,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:27:02,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:27:02,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:27:02,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:27:02,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:27:02,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:27:02,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:27:02,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:27:02,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (1/1) ... [2021-03-11 20:27:02,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:27:02,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:27:02,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:27:02,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:27:02,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (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 [2021-03-11 20:27:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:27:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:27:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:27:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:27:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:27:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:27:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:27:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:27:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:27:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:27:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:27:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:27:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:27:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:27:02,267 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:27:02,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:27:02,631 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:27:02,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:27:02 BoogieIcfgContainer [2021-03-11 20:27:02,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:27:02,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:27:02,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:27:02,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:27:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:27:01" (1/3) ... [2021-03-11 20:27:02,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e1ab86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:27:02, skipping insertion in model container [2021-03-11 20:27:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:02" (2/3) ... [2021-03-11 20:27:02,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e1ab86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:27:02, skipping insertion in model container [2021-03-11 20:27:02,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:27:02" (3/3) ... [2021-03-11 20:27:02,640 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-03-11 20:27:02,644 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:27:02,648 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:27:02,649 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:27:02,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,683 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,683 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,686 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,686 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,694 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:02,703 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:27:02,718 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:27:02,747 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:27:02,747 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:27:02,747 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:27:02,748 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:27:02,748 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:27:02,748 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:27:02,748 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:27:02,748 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:27:02,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:27:02,806 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 20:27:02,806 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:02,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:27:02,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:27:02,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 20:27:02,830 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:27:02,837 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:27:02,841 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:27:02,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-11 20:27:02,864 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 20:27:02,864 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:02,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:27:02,867 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:27:04,786 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-11 20:27:05,027 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-11 20:27:05,115 INFO L131 LiptonReduction]: Checked pairs total: 1710 [2021-03-11 20:27:05,116 INFO L133 LiptonReduction]: Total number of compositions: 48 [2021-03-11 20:27:05,117 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2290 [2021-03-11 20:27:05,131 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:27:05,132 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:05,133 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,133 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,133 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1369737305, now seen corresponding path program 1 times [2021-03-11 20:27:05,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557306262] [2021-03-11 20:27:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557306262] [2021-03-11 20:27:05,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:27:05,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311118834] [2021-03-11 20:27:05,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:27:05,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:27:05,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:27:05,286 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 123 [2021-03-11 20:27:05,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 123 [2021-03-11 20:27:05,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:05,294 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:27:05,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:05,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:27:05,295 INFO L132 encePairwiseOnDemand]: 122/123 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-03-11 20:27:05,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2021-03-11 20:27:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:27:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:27:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 231 transitions. [2021-03-11 20:27:05,304 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9390243902439024 [2021-03-11 20:27:05,304 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 231 transitions. [2021-03-11 20:27:05,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 231 transitions. [2021-03-11 20:27:05,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:05,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 231 transitions. [2021-03-11 20:27:05,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,313 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,314 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 231 transitions. [2021-03-11 20:27:05,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2021-03-11 20:27:05,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:27:05,317 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2021-03-11 20:27:05,318 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-11 20:27:05,319 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-03-11 20:27:05,319 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2021-03-11 20:27:05,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,320 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,320 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:27:05,320 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,320 INFO L82 PathProgramCache]: Analyzing trace with hash -487816528, now seen corresponding path program 1 times [2021-03-11 20:27:05,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696607336] [2021-03-11 20:27:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696607336] [2021-03-11 20:27:05,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:27:05,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541653242] [2021-03-11 20:27:05,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:05,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:05,396 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 123 [2021-03-11 20:27:05,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 123 [2021-03-11 20:27:05,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:05,405 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:27:05,405 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:05,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 20:27:05,406 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-03-11 20:27:05,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 46 flow [2021-03-11 20:27:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2021-03-11 20:27:05,408 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8563685636856369 [2021-03-11 20:27:05,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2021-03-11 20:27:05,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2021-03-11 20:27:05,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:05,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2021-03-11 20:27:05,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,412 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 316 transitions. [2021-03-11 20:27:05,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 46 flow [2021-03-11 20:27:05,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:27:05,413 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 48 flow [2021-03-11 20:27:05,413 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2021-03-11 20:27:05,414 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-03-11 20:27:05,414 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 48 flow [2021-03-11 20:27:05,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,414 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,414 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:27:05,414 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2057556235, now seen corresponding path program 1 times [2021-03-11 20:27:05,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173548620] [2021-03-11 20:27:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173548620] [2021-03-11 20:27:05,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:27:05,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111668103] [2021-03-11 20:27:05,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:05,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:05,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:05,496 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 123 [2021-03-11 20:27:05,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 123 [2021-03-11 20:27:05,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:05,525 INFO L129 PetriNetUnfolder]: 24/72 cut-off events. [2021-03-11 20:27:05,525 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 20:27:05,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 72 events. 24/72 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 262 event pairs, 10 based on Foata normal form. 2/66 useless extension candidates. Maximal degree in co-relation 137. Up to 45 conditions per place. [2021-03-11 20:27:05,528 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 6 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-11 20:27:05,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 72 flow [2021-03-11 20:27:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-11 20:27:05,534 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8401084010840109 [2021-03-11 20:27:05,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-11 20:27:05,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-11 20:27:05,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:05,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-11 20:27:05,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,540 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 48 flow. Second operand 3 states and 310 transitions. [2021-03-11 20:27:05,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 72 flow [2021-03-11 20:27:05,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:27:05,541 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 63 flow [2021-03-11 20:27:05,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2021-03-11 20:27:05,542 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-11 20:27:05,542 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 63 flow [2021-03-11 20:27:05,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,543 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:27:05,546 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash -640843491, now seen corresponding path program 1 times [2021-03-11 20:27:05,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395484037] [2021-03-11 20:27:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:05,614 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:27:05,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:27:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395484037] [2021-03-11 20:27:05,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:27:05,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012078999] [2021-03-11 20:27:05,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:05,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:05,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:05,627 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 123 [2021-03-11 20:27:05,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 123 [2021-03-11 20:27:05,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:05,673 INFO L129 PetriNetUnfolder]: 34/111 cut-off events. [2021-03-11 20:27:05,673 INFO L130 PetriNetUnfolder]: For 47/49 co-relation queries the response was YES. [2021-03-11 20:27:05,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 111 events. 34/111 cut-off events. For 47/49 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 461 event pairs, 7 based on Foata normal form. 9/116 useless extension candidates. Maximal degree in co-relation 251. Up to 45 conditions per place. [2021-03-11 20:27:05,676 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 8 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2021-03-11 20:27:05,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 120 flow [2021-03-11 20:27:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2021-03-11 20:27:05,677 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7669376693766937 [2021-03-11 20:27:05,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2021-03-11 20:27:05,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2021-03-11 20:27:05,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:05,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2021-03-11 20:27:05,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,680 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 63 flow. Second operand 3 states and 283 transitions. [2021-03-11 20:27:05,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 120 flow [2021-03-11 20:27:05,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:27:05,681 INFO L241 Difference]: Finished difference. Result has 32 places, 26 transitions, 131 flow [2021-03-11 20:27:05,681 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2021-03-11 20:27:05,681 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2021-03-11 20:27:05,681 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 131 flow [2021-03-11 20:27:05,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,682 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,682 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:27:05,682 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,683 INFO L82 PathProgramCache]: Analyzing trace with hash -641010891, now seen corresponding path program 2 times [2021-03-11 20:27:05,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602913062] [2021-03-11 20:27:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:05,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:05,761 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:27:05,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:27:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602913062] [2021-03-11 20:27:05,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:27:05,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065872414] [2021-03-11 20:27:05,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:27:05,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:27:05,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:27:05,773 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 123 [2021-03-11 20:27:05,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 123 [2021-03-11 20:27:05,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:05,813 INFO L129 PetriNetUnfolder]: 26/112 cut-off events. [2021-03-11 20:27:05,814 INFO L130 PetriNetUnfolder]: For 79/128 co-relation queries the response was YES. [2021-03-11 20:27:05,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 112 events. 26/112 cut-off events. For 79/128 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 512 event pairs, 3 based on Foata normal form. 9/117 useless extension candidates. Maximal degree in co-relation 346. Up to 47 conditions per place. [2021-03-11 20:27:05,816 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 10 selfloop transitions, 11 changer transitions 0/31 dead transitions. [2021-03-11 20:27:05,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 200 flow [2021-03-11 20:27:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:27:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:27:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-11 20:27:05,819 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.766260162601626 [2021-03-11 20:27:05,819 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-11 20:27:05,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-11 20:27:05,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:05,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-11 20:27:05,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,821 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,821 INFO L185 Difference]: Start difference. First operand has 32 places, 26 transitions, 131 flow. Second operand 4 states and 377 transitions. [2021-03-11 20:27:05,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 200 flow [2021-03-11 20:27:05,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:27:05,824 INFO L241 Difference]: Finished difference. Result has 36 places, 29 transitions, 180 flow [2021-03-11 20:27:05,825 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2021-03-11 20:27:05,827 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-11 20:27:05,827 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 180 flow [2021-03-11 20:27:05,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,828 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,828 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:27:05,828 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,829 INFO L82 PathProgramCache]: Analyzing trace with hash -641338592, now seen corresponding path program 1 times [2021-03-11 20:27:05,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676125276] [2021-03-11 20:27:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676125276] [2021-03-11 20:27:05,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:27:05,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648027671] [2021-03-11 20:27:05,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:05,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:05,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:05,867 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 123 [2021-03-11 20:27:05,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 123 [2021-03-11 20:27:05,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:05,879 INFO L129 PetriNetUnfolder]: 20/87 cut-off events. [2021-03-11 20:27:05,879 INFO L130 PetriNetUnfolder]: For 140/163 co-relation queries the response was YES. [2021-03-11 20:27:05,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 87 events. 20/87 cut-off events. For 140/163 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 364 event pairs, 1 based on Foata normal form. 6/89 useless extension candidates. Maximal degree in co-relation 264. Up to 34 conditions per place. [2021-03-11 20:27:05,880 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 1 selfloop transitions, 4 changer transitions 4/29 dead transitions. [2021-03-11 20:27:05,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 190 flow [2021-03-11 20:27:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2021-03-11 20:27:05,881 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8644986449864499 [2021-03-11 20:27:05,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2021-03-11 20:27:05,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2021-03-11 20:27:05,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:05,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2021-03-11 20:27:05,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,884 INFO L185 Difference]: Start difference. First operand has 36 places, 29 transitions, 180 flow. Second operand 3 states and 319 transitions. [2021-03-11 20:27:05,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 190 flow [2021-03-11 20:27:05,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 186 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-03-11 20:27:05,886 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 154 flow [2021-03-11 20:27:05,886 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2021-03-11 20:27:05,886 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-11 20:27:05,886 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 154 flow [2021-03-11 20:27:05,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,887 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:05,887 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:05,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:27:05,887 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1121882972, now seen corresponding path program 1 times [2021-03-11 20:27:05,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:05,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048390095] [2021-03-11 20:27:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:05,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:05,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:05,912 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:27:05,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:27:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:05,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048390095] [2021-03-11 20:27:05,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:05,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:27:05,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025609488] [2021-03-11 20:27:05,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:27:05,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:05,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:27:05,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:27:05,930 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 123 [2021-03-11 20:27:05,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:05,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:05,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 123 [2021-03-11 20:27:05,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:06,000 INFO L129 PetriNetUnfolder]: 30/98 cut-off events. [2021-03-11 20:27:06,000 INFO L130 PetriNetUnfolder]: For 195/229 co-relation queries the response was YES. [2021-03-11 20:27:06,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 98 events. 30/98 cut-off events. For 195/229 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 378 event pairs, 1 based on Foata normal form. 8/104 useless extension candidates. Maximal degree in co-relation 362. Up to 35 conditions per place. [2021-03-11 20:27:06,001 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 12 selfloop transitions, 10 changer transitions 6/37 dead transitions. [2021-03-11 20:27:06,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 306 flow [2021-03-11 20:27:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:27:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:27:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 461 transitions. [2021-03-11 20:27:06,003 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7495934959349594 [2021-03-11 20:27:06,003 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 461 transitions. [2021-03-11 20:27:06,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 461 transitions. [2021-03-11 20:27:06,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:06,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 461 transitions. [2021-03-11 20:27:06,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,007 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,007 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 154 flow. Second operand 5 states and 461 transitions. [2021-03-11 20:27:06,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 306 flow [2021-03-11 20:27:06,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 280 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-11 20:27:06,011 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 219 flow [2021-03-11 20:27:06,011 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2021-03-11 20:27:06,011 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-03-11 20:27:06,011 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 219 flow [2021-03-11 20:27:06,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:06,012 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:06,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:27:06,012 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:06,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:06,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2027895260, now seen corresponding path program 2 times [2021-03-11 20:27:06,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:06,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589762103] [2021-03-11 20:27:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:06,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,064 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:27:06,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:27:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:06,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589762103] [2021-03-11 20:27:06,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:06,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:27:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670386184] [2021-03-11 20:27:06,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:27:06,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:27:06,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:27:06,079 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 123 [2021-03-11 20:27:06,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:06,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 123 [2021-03-11 20:27:06,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:06,111 INFO L129 PetriNetUnfolder]: 21/90 cut-off events. [2021-03-11 20:27:06,111 INFO L130 PetriNetUnfolder]: For 291/334 co-relation queries the response was YES. [2021-03-11 20:27:06,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 90 events. 21/90 cut-off events. For 291/334 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 373 event pairs, 1 based on Foata normal form. 7/95 useless extension candidates. Maximal degree in co-relation 366. Up to 34 conditions per place. [2021-03-11 20:27:06,112 INFO L132 encePairwiseOnDemand]: 117/123 looper letters, 6 selfloop transitions, 6 changer transitions 15/36 dead transitions. [2021-03-11 20:27:06,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 314 flow [2021-03-11 20:27:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:27:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:27:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-11 20:27:06,114 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7430894308943089 [2021-03-11 20:27:06,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-11 20:27:06,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-11 20:27:06,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:06,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-11 20:27:06,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,117 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 219 flow. Second operand 5 states and 457 transitions. [2021-03-11 20:27:06,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 314 flow [2021-03-11 20:27:06,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 308 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:27:06,121 INFO L241 Difference]: Finished difference. Result has 48 places, 21 transitions, 167 flow [2021-03-11 20:27:06,121 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=48, PETRI_TRANSITIONS=21} [2021-03-11 20:27:06,121 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2021-03-11 20:27:06,121 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 21 transitions, 167 flow [2021-03-11 20:27:06,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,122 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:06,122 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:06,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:27:06,122 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2139516710, now seen corresponding path program 1 times [2021-03-11 20:27:06,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:06,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584255296] [2021-03-11 20:27:06,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:06,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:06,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584255296] [2021-03-11 20:27:06,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:06,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:27:06,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758048361] [2021-03-11 20:27:06,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:06,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:06,180 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 123 [2021-03-11 20:27:06,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 21 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:06,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 123 [2021-03-11 20:27:06,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:06,200 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2021-03-11 20:27:06,200 INFO L130 PetriNetUnfolder]: For 121/123 co-relation queries the response was YES. [2021-03-11 20:27:06,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 76 events. 25/76 cut-off events. For 121/123 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 256 event pairs, 10 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 235. Up to 52 conditions per place. [2021-03-11 20:27:06,201 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 4 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2021-03-11 20:27:06,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 24 transitions, 189 flow [2021-03-11 20:27:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2021-03-11 20:27:06,202 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8130081300813008 [2021-03-11 20:27:06,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2021-03-11 20:27:06,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2021-03-11 20:27:06,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:06,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2021-03-11 20:27:06,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,204 INFO L185 Difference]: Start difference. First operand has 48 places, 21 transitions, 167 flow. Second operand 3 states and 300 transitions. [2021-03-11 20:27:06,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 24 transitions, 189 flow [2021-03-11 20:27:06,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 24 transitions, 128 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-03-11 20:27:06,206 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 127 flow [2021-03-11 20:27:06,206 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2021-03-11 20:27:06,206 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2021-03-11 20:27:06,206 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 127 flow [2021-03-11 20:27:06,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,207 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:06,207 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:06,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:27:06,207 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:06,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1019999628, now seen corresponding path program 1 times [2021-03-11 20:27:06,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:06,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231464000] [2021-03-11 20:27:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:06,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:06,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231464000] [2021-03-11 20:27:06,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:06,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:27:06,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193384475] [2021-03-11 20:27:06,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:27:06,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:06,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:27:06,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:27:06,252 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 123 [2021-03-11 20:27:06,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:06,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 123 [2021-03-11 20:27:06,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:06,269 INFO L129 PetriNetUnfolder]: 11/50 cut-off events. [2021-03-11 20:27:06,270 INFO L130 PetriNetUnfolder]: For 32/41 co-relation queries the response was YES. [2021-03-11 20:27:06,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 50 events. 11/50 cut-off events. For 32/41 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 133 event pairs, 2 based on Foata normal form. 14/64 useless extension candidates. Maximal degree in co-relation 165. Up to 28 conditions per place. [2021-03-11 20:27:06,270 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 2 selfloop transitions, 5 changer transitions 3/26 dead transitions. [2021-03-11 20:27:06,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 159 flow [2021-03-11 20:27:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:27:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:27:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2021-03-11 20:27:06,272 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8109756097560976 [2021-03-11 20:27:06,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2021-03-11 20:27:06,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2021-03-11 20:27:06,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:06,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2021-03-11 20:27:06,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,274 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 127 flow. Second operand 4 states and 399 transitions. [2021-03-11 20:27:06,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 159 flow [2021-03-11 20:27:06,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:27:06,277 INFO L241 Difference]: Finished difference. Result has 43 places, 23 transitions, 142 flow [2021-03-11 20:27:06,278 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=23} [2021-03-11 20:27:06,278 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-03-11 20:27:06,278 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 142 flow [2021-03-11 20:27:06,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,278 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:06,279 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:06,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:27:06,279 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:06,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1225455174, now seen corresponding path program 1 times [2021-03-11 20:27:06,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:06,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079835275] [2021-03-11 20:27:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:06,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:06,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:06,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:27:06,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079835275] [2021-03-11 20:27:06,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:06,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:27:06,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805779700] [2021-03-11 20:27:06,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:27:06,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:06,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:27:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:27:06,324 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 123 [2021-03-11 20:27:06,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:06,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 123 [2021-03-11 20:27:06,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:06,344 INFO L129 PetriNetUnfolder]: 6/35 cut-off events. [2021-03-11 20:27:06,344 INFO L130 PetriNetUnfolder]: For 63/73 co-relation queries the response was YES. [2021-03-11 20:27:06,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 35 events. 6/35 cut-off events. For 63/73 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 1 based on Foata normal form. 13/48 useless extension candidates. Maximal degree in co-relation 132. Up to 15 conditions per place. [2021-03-11 20:27:06,345 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-03-11 20:27:06,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 22 transitions, 148 flow [2021-03-11 20:27:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:27:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:27:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2021-03-11 20:27:06,348 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8016260162601626 [2021-03-11 20:27:06,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2021-03-11 20:27:06,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2021-03-11 20:27:06,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:06,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2021-03-11 20:27:06,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,352 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,352 INFO L185 Difference]: Start difference. First operand has 43 places, 23 transitions, 142 flow. Second operand 5 states and 493 transitions. [2021-03-11 20:27:06,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 22 transitions, 148 flow [2021-03-11 20:27:06,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 22 transitions, 131 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-11 20:27:06,354 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-11 20:27:06,354 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-11 20:27:06,355 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-03-11 20:27:06,355 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2021-03-11 20:27:06,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:27:06,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:27:06,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:27:06 BasicIcfg [2021-03-11 20:27:06,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:27:06,359 INFO L168 Benchmark]: Toolchain (without parser) took 4622.16 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 312.8 MB in the beginning and 327.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:06,360 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.1 MB in the beginning and 331.0 MB in the end (delta: 76.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:27:06,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.83 ms. Allocated memory is still 350.2 MB. Free memory was 312.1 MB in the beginning and 312.6 MB in the end (delta: -466.8 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:06,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.55 ms. Allocated memory is still 350.2 MB. Free memory was 312.6 MB in the beginning and 310.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:06,364 INFO L168 Benchmark]: Boogie Preprocessor took 16.73 ms. Allocated memory is still 350.2 MB. Free memory was 310.5 MB in the beginning and 309.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:06,364 INFO L168 Benchmark]: RCFGBuilder took 432.28 ms. Allocated memory is still 350.2 MB. Free memory was 309.0 MB in the beginning and 286.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:06,364 INFO L168 Benchmark]: TraceAbstraction took 3724.01 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 285.9 MB in the beginning and 327.6 MB in the end (delta: -41.7 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:06,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.1 MB in the beginning and 331.0 MB in the end (delta: 76.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 387.83 ms. Allocated memory is still 350.2 MB. Free memory was 312.1 MB in the beginning and 312.6 MB in the end (delta: -466.8 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.55 ms. Allocated memory is still 350.2 MB. Free memory was 312.6 MB in the beginning and 310.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.73 ms. Allocated memory is still 350.2 MB. Free memory was 310.5 MB in the beginning and 309.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 432.28 ms. Allocated memory is still 350.2 MB. Free memory was 309.0 MB in the beginning and 286.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3724.01 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 285.9 MB in the beginning and 327.6 MB in the end (delta: -41.7 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2274.5ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 1710 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1036, positive: 960, positive conditional: 0, positive unconditional: 960, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 650, positive: 617, positive conditional: 0, positive unconditional: 617, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 650, positive: 605, positive conditional: 0, positive unconditional: 605, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 202, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 151, negative conditional: 0, negative unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1036, positive: 343, positive conditional: 0, positive unconditional: 343, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 650, unknown conditional: 0, unknown unconditional: 650] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3612.6ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 444.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2376.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 17 SDslu, 12 SDs, 0 SdLazy, 85 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=7, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.2ms SsaConstructionTime, 158.2ms SatisfiabilityAnalysisTime, 414.6ms InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 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...