/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:50:09,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:50:09,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:50:09,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:50:09,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:50:09,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:50:09,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:50:09,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:50:09,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:50:09,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:50:09,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:50:09,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:50:09,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:50:09,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:50:09,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:50:09,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:50:09,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:50:09,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:50:09,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:50:09,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:50:09,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:50:09,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:50:09,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:50:09,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:50:09,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:50:09,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:50:09,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:50:09,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:50:09,358 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 [2021-03-24 19:50:09,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:50:09,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:50:09,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:50:09,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:50:09,392 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:50:09,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:50:09,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:50:09,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:50:09,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:50:09,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:50:09,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:50:09,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:50:09,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:50:09,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:50:09,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:50:09,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:50:09,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:50:09,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:50:09,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:50:09,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:50:09,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:50:09,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:50:09,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:50:09,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:50:09,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:50:09,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:50:09,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:50:09,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:50:09,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:50:09,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:50:09,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:50:09,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:50:09,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:50:09,735 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:50:09,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-03-24 19:50:09,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b205ff35/bb460d82692348359614cef9407c79a2/FLAGd1358fade [2021-03-24 19:50:10,253 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:50:10,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-03-24 19:50:10,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b205ff35/bb460d82692348359614cef9407c79a2/FLAGd1358fade [2021-03-24 19:50:10,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b205ff35/bb460d82692348359614cef9407c79a2 [2021-03-24 19:50:10,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:50:10,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:50:10,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:50:10,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:50:10,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:50:10,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:50:10" (1/1) ... [2021-03-24 19:50:10,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6538ae25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:10, skipping insertion in model container [2021-03-24 19:50:10,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:50:10" (1/1) ... [2021-03-24 19:50:10,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:50:10,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:50:10,744 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/safe005_tso.opt.i[949,962] [2021-03-24 19:50:10,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:50:10,930 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:50:10,942 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/safe005_tso.opt.i[949,962] [2021-03-24 19:50:10,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:50:11,071 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:50:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11 WrapperNode [2021-03-24 19:50:11,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:50:11,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:50:11,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:50:11,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:50:11,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:50:11,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:50:11,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:50:11,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:50:11,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (1/1) ... [2021-03-24 19:50:11,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:50:11,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:50:11,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:50:11,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:50:11,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (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 [2021-03-24 19:50:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:50:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:50:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:50:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:50:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:50:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:50:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:50:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:50:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:50:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:50:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:50:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:50:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:50:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:50:11,233 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:50:11,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:50:11,638 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:50:11,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:50:11 BoogieIcfgContainer [2021-03-24 19:50:11,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:50:11,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:50:11,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:50:11,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:50:11,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:50:10" (1/3) ... [2021-03-24 19:50:11,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7431948a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:50:11, skipping insertion in model container [2021-03-24 19:50:11,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:11" (2/3) ... [2021-03-24 19:50:11,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7431948a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:50:11, skipping insertion in model container [2021-03-24 19:50:11,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:50:11" (3/3) ... [2021-03-24 19:50:11,646 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2021-03-24 19:50:11,654 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:50:11,657 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:50:11,658 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:50:11,682 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,683 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,683 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,683 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,683 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,683 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,683 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,684 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,690 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,690 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,693 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,694 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,695 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,695 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:11,696 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:50:11,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:50:11,728 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:50:11,728 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:50:11,728 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:50:11,728 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:50:11,729 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:50:11,729 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:50:11,729 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:50:11,729 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:50:11,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:50:11,766 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:50:11,766 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:11,769 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. [2021-03-24 19:50:11,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:50:11,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:50:11,774 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:50:11,784 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:50:11,787 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:50:11,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:50:11,801 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:50:11,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:11,802 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. [2021-03-24 19:50:11,804 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:50:13,220 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 19:50:13,393 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 19:50:13,444 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-24 19:50:13,444 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 19:50:13,446 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1673 [2021-03-24 19:50:13,456 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 19:50:13,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:13,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:13,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:13,457 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:13,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:13,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-24 19:50:13,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:13,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329458047] [2021-03-24 19:50:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:13,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:13,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:13,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329458047] [2021-03-24 19:50:13,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:13,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 19:50:13,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460589198] [2021-03-24 19:50:13,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:50:13,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:50:13,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:50:13,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 113 [2021-03-24 19:50:13,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2021-03-24 19:50:13,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:13,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 113 [2021-03-24 19:50:13,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:13,761 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-24 19:50:13,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:13,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 19:50:13,762 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2021-03-24 19:50:13,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 59 flow [2021-03-24 19:50:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:50:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:50:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-24 19:50:13,773 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.887905604719764 [2021-03-24 19:50:13,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-24 19:50:13,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-24 19:50:13,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:13,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-24 19:50:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2021-03-24 19:50:13,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 19:50:13,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 19:50:13,788 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 301 transitions. [2021-03-24 19:50:13,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 59 flow [2021-03-24 19:50:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:50:13,792 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 58 flow [2021-03-24 19:50:13,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-03-24 19:50:13,794 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-24 19:50:13,794 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 58 flow [2021-03-24 19:50:13,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2021-03-24 19:50:13,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:13,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:13,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:50:13,795 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:13,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1355243279, now seen corresponding path program 1 times [2021-03-24 19:50:13,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:13,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704335183] [2021-03-24 19:50:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:13,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:13,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:13,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:13,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:13,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:13,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:13,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704335183] [2021-03-24 19:50:13,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:13,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985366] [2021-03-24 19:50:13,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:13,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:13,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-03-24 19:50:13,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-24 19:50:13,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:13,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-03-24 19:50:13,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:13,910 INFO L129 PetriNetUnfolder]: 17/72 cut-off events. [2021-03-24 19:50:13,911 INFO L130 PetriNetUnfolder]: For 17/45 co-relation queries the response was YES. [2021-03-24 19:50:13,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 72 events. 17/72 cut-off events. For 17/45 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 257 event pairs, 3 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 125. Up to 24 conditions per place. [2021-03-24 19:50:13,914 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 6 selfloop transitions, 5 changer transitions 3/29 dead transitions. [2021-03-24 19:50:13,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 103 flow [2021-03-24 19:50:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:50:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:50:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2021-03-24 19:50:13,921 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8495575221238938 [2021-03-24 19:50:13,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2021-03-24 19:50:13,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2021-03-24 19:50:13,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:13,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2021-03-24 19:50:13,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-03-24 19:50:13,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:50:13,926 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:50:13,927 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 58 flow. Second operand 4 states and 384 transitions. [2021-03-24 19:50:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 103 flow [2021-03-24 19:50:13,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 97 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:50:13,928 INFO L241 Difference]: Finished difference. Result has 35 places, 24 transitions, 84 flow [2021-03-24 19:50:13,928 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-03-24 19:50:13,929 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-24 19:50:13,929 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 84 flow [2021-03-24 19:50:13,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-24 19:50:13,929 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:13,929 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:13,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:50:13,930 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:13,930 INFO L82 PathProgramCache]: Analyzing trace with hash 810484468, now seen corresponding path program 1 times [2021-03-24 19:50:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:13,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609662520] [2021-03-24 19:50:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:14,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:14,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:14,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609662520] [2021-03-24 19:50:14,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:14,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:14,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541832191] [2021-03-24 19:50:14,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:14,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:14,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:14,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:14,027 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-03-24 19:50:14,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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) [2021-03-24 19:50:14,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:14,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-03-24 19:50:14,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:14,074 INFO L129 PetriNetUnfolder]: 8/57 cut-off events. [2021-03-24 19:50:14,075 INFO L130 PetriNetUnfolder]: For 65/99 co-relation queries the response was YES. [2021-03-24 19:50:14,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 57 events. 8/57 cut-off events. For 65/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 182 event pairs, 0 based on Foata normal form. 8/65 useless extension candidates. Maximal degree in co-relation 126. Up to 17 conditions per place. [2021-03-24 19:50:14,076 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 8 selfloop transitions, 4 changer transitions 4/31 dead transitions. [2021-03-24 19:50:14,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 144 flow [2021-03-24 19:50:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:50:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:50:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2021-03-24 19:50:14,078 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442477876106195 [2021-03-24 19:50:14,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 477 transitions. [2021-03-24 19:50:14,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 477 transitions. [2021-03-24 19:50:14,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:14,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 477 transitions. [2021-03-24 19:50:14,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 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) [2021-03-24 19:50:14,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 19:50:14,082 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 19:50:14,082 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 84 flow. Second operand 5 states and 477 transitions. [2021-03-24 19:50:14,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 144 flow [2021-03-24 19:50:14,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 131 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 19:50:14,088 INFO L241 Difference]: Finished difference. Result has 41 places, 26 transitions, 111 flow [2021-03-24 19:50:14,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2021-03-24 19:50:14,093 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-24 19:50:14,093 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 111 flow [2021-03-24 19:50:14,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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) [2021-03-24 19:50:14,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:14,094 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:14,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:50:14,094 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:14,095 INFO L82 PathProgramCache]: Analyzing trace with hash 537849316, now seen corresponding path program 1 times [2021-03-24 19:50:14,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:14,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204433915] [2021-03-24 19:50:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:14,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,165 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:50:14,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:50:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:14,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204433915] [2021-03-24 19:50:14,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:14,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:50:14,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329041524] [2021-03-24 19:50:14,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:14,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:14,178 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 19:50:14,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 111 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) [2021-03-24 19:50:14,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:14,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 19:50:14,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:14,198 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2021-03-24 19:50:14,198 INFO L130 PetriNetUnfolder]: For 211/269 co-relation queries the response was YES. [2021-03-24 19:50:14,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 53 events. 5/53 cut-off events. For 211/269 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 2 based on Foata normal form. 11/63 useless extension candidates. Maximal degree in co-relation 120. Up to 16 conditions per place. [2021-03-24 19:50:14,199 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 9 selfloop transitions, 4 changer transitions 1/28 dead transitions. [2021-03-24 19:50:14,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 145 flow [2021-03-24 19:50:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:50:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:50:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2021-03-24 19:50:14,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8075221238938053 [2021-03-24 19:50:14,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2021-03-24 19:50:14,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2021-03-24 19:50:14,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:14,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2021-03-24 19:50:14,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2021-03-24 19:50:14,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:50:14,204 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:50:14,204 INFO L185 Difference]: Start difference. First operand has 41 places, 26 transitions, 111 flow. Second operand 4 states and 365 transitions. [2021-03-24 19:50:14,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 145 flow [2021-03-24 19:50:14,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 127 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 19:50:14,206 INFO L241 Difference]: Finished difference. Result has 40 places, 27 transitions, 122 flow [2021-03-24 19:50:14,206 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2021-03-24 19:50:14,206 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-24 19:50:14,206 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 122 flow [2021-03-24 19:50:14,207 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) [2021-03-24 19:50:14,207 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:14,207 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:14,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:50:14,207 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:14,207 INFO L82 PathProgramCache]: Analyzing trace with hash -740040488, now seen corresponding path program 1 times [2021-03-24 19:50:14,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:14,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320147247] [2021-03-24 19:50:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:14,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:14,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,263 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:50:14,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:50:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:14,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320147247] [2021-03-24 19:50:14,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:14,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:14,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500255125] [2021-03-24 19:50:14,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:14,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:14,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:14,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:14,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 113 [2021-03-24 19:50:14,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2021-03-24 19:50:14,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:14,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 113 [2021-03-24 19:50:14,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:14,315 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2021-03-24 19:50:14,315 INFO L130 PetriNetUnfolder]: For 51/62 co-relation queries the response was YES. [2021-03-24 19:50:14,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 58 events. 5/58 cut-off events. For 51/62 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 5/62 useless extension candidates. Maximal degree in co-relation 141. Up to 22 conditions per place. [2021-03-24 19:50:14,316 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 5 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2021-03-24 19:50:14,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 175 flow [2021-03-24 19:50:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:50:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:50:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2021-03-24 19:50:14,318 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7805309734513274 [2021-03-24 19:50:14,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2021-03-24 19:50:14,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2021-03-24 19:50:14,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:14,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2021-03-24 19:50:14,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2021-03-24 19:50:14,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 19:50:14,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 19:50:14,324 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 122 flow. Second operand 5 states and 441 transitions. [2021-03-24 19:50:14,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 175 flow [2021-03-24 19:50:14,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 32 transitions, 163 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-24 19:50:14,326 INFO L241 Difference]: Finished difference. Result has 43 places, 22 transitions, 93 flow [2021-03-24 19:50:14,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=43, PETRI_TRANSITIONS=22} [2021-03-24 19:50:14,327 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-24 19:50:14,327 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 22 transitions, 93 flow [2021-03-24 19:50:14,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2021-03-24 19:50:14,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:14,327 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:14,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:50:14,328 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash 60270620, now seen corresponding path program 1 times [2021-03-24 19:50:14,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:14,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478944506] [2021-03-24 19:50:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:14,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,394 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-24 19:50:14,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 19:50:14,416 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:50:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:14,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:14,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478944506] [2021-03-24 19:50:14,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:14,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:50:14,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726269642] [2021-03-24 19:50:14,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:50:14,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:14,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:50:14,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:50:14,431 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 19:50:14,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 22 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2021-03-24 19:50:14,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:14,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 19:50:14,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:14,503 INFO L129 PetriNetUnfolder]: 51/119 cut-off events. [2021-03-24 19:50:14,503 INFO L130 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2021-03-24 19:50:14,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 119 events. 51/119 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 428 event pairs, 14 based on Foata normal form. 8/117 useless extension candidates. Maximal degree in co-relation 251. Up to 54 conditions per place. [2021-03-24 19:50:14,506 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 7 selfloop transitions, 4 changer transitions 11/37 dead transitions. [2021-03-24 19:50:14,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 167 flow [2021-03-24 19:50:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:50:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:50:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2021-03-24 19:50:14,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2021-03-24 19:50:14,508 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2021-03-24 19:50:14,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2021-03-24 19:50:14,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:14,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2021-03-24 19:50:14,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2021-03-24 19:50:14,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 19:50:14,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 19:50:14,511 INFO L185 Difference]: Start difference. First operand has 43 places, 22 transitions, 93 flow. Second operand 6 states and 516 transitions. [2021-03-24 19:50:14,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 167 flow [2021-03-24 19:50:14,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 136 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-03-24 19:50:14,514 INFO L241 Difference]: Finished difference. Result has 41 places, 24 transitions, 100 flow [2021-03-24 19:50:14,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=24} [2021-03-24 19:50:14,515 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-24 19:50:14,515 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 100 flow [2021-03-24 19:50:14,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2021-03-24 19:50:14,515 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:14,515 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:14,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:50:14,516 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:14,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1889097591, now seen corresponding path program 1 times [2021-03-24 19:50:14,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:14,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790316352] [2021-03-24 19:50:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:14,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,570 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-24 19:50:14,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 19:50:14,591 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:50:14,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:14,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:14,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790316352] [2021-03-24 19:50:14,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:14,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:50:14,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672308182] [2021-03-24 19:50:14,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:50:14,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:14,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:50:14,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:50:14,602 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 19:50:14,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-03-24 19:50:14,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:14,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 19:50:14,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:14,687 INFO L129 PetriNetUnfolder]: 22/70 cut-off events. [2021-03-24 19:50:14,687 INFO L130 PetriNetUnfolder]: For 77/112 co-relation queries the response was YES. [2021-03-24 19:50:14,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 70 events. 22/70 cut-off events. For 77/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 190 event pairs, 0 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 234. Up to 44 conditions per place. [2021-03-24 19:50:14,689 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 3 selfloop transitions, 6 changer transitions 15/39 dead transitions. [2021-03-24 19:50:14,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 237 flow [2021-03-24 19:50:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:50:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:50:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2021-03-24 19:50:14,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7585335018963337 [2021-03-24 19:50:14,691 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2021-03-24 19:50:14,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2021-03-24 19:50:14,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:14,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2021-03-24 19:50:14,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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) [2021-03-24 19:50:14,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2021-03-24 19:50:14,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2021-03-24 19:50:14,696 INFO L185 Difference]: Start difference. First operand has 41 places, 24 transitions, 100 flow. Second operand 7 states and 600 transitions. [2021-03-24 19:50:14,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 237 flow [2021-03-24 19:50:14,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 222 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 19:50:14,699 INFO L241 Difference]: Finished difference. Result has 46 places, 24 transitions, 122 flow [2021-03-24 19:50:14,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=24} [2021-03-24 19:50:14,699 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-24 19:50:14,699 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 122 flow [2021-03-24 19:50:14,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-03-24 19:50:14,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:14,700 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:14,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:50:14,700 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:14,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1717744453, now seen corresponding path program 1 times [2021-03-24 19:50:14,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:14,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300397688] [2021-03-24 19:50:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:14,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:14,760 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-24 19:50:14,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 19:50:14,775 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:50:14,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:14,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:14,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300397688] [2021-03-24 19:50:14,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:14,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:50:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273928752] [2021-03-24 19:50:14,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:50:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:50:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:50:14,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 19:50:14,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 24 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2021-03-24 19:50:14,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:14,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 19:50:14,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:14,873 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-24 19:50:14,873 INFO L130 PetriNetUnfolder]: For 80/100 co-relation queries the response was YES. [2021-03-24 19:50:14,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 28 events. 2/28 cut-off events. For 80/100 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 91. Up to 11 conditions per place. [2021-03-24 19:50:14,874 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-24 19:50:14,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 174 flow [2021-03-24 19:50:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:50:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:50:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 671 transitions. [2021-03-24 19:50:14,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7422566371681416 [2021-03-24 19:50:14,876 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 671 transitions. [2021-03-24 19:50:14,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 671 transitions. [2021-03-24 19:50:14,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:14,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 671 transitions. [2021-03-24 19:50:14,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 83.875) internal successors, (671), 8 states have internal predecessors, (671), 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) [2021-03-24 19:50:14,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2021-03-24 19:50:14,880 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2021-03-24 19:50:14,880 INFO L185 Difference]: Start difference. First operand has 46 places, 24 transitions, 122 flow. Second operand 8 states and 671 transitions. [2021-03-24 19:50:14,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 174 flow [2021-03-24 19:50:14,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 27 transitions, 132 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-24 19:50:14,881 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-24 19:50:14,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-24 19:50:14,882 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-03-24 19:50:14,882 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2021-03-24 19:50:14,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2021-03-24 19:50:14,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:50:14,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:50:14 BasicIcfg [2021-03-24 19:50:14,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:50:14,889 INFO L168 Benchmark]: Toolchain (without parser) took 4311.64 ms. Allocated memory was 255.9 MB in the beginning and 453.0 MB in the end (delta: 197.1 MB). Free memory was 233.4 MB in the beginning and 422.1 MB in the end (delta: -188.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:14,889 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:50:14,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.86 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 233.4 MB in the beginning and 341.3 MB in the end (delta: -108.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:14,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.98 ms. Allocated memory is still 377.5 MB. Free memory was 341.3 MB in the beginning and 339.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:14,892 INFO L168 Benchmark]: Boogie Preprocessor took 29.68 ms. Allocated memory is still 377.5 MB. Free memory was 339.6 MB in the beginning and 338.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:50:14,892 INFO L168 Benchmark]: RCFGBuilder took 479.49 ms. Allocated memory is still 377.5 MB. Free memory was 338.0 MB in the beginning and 355.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:14,894 INFO L168 Benchmark]: TraceAbstraction took 3244.54 ms. Allocated memory was 377.5 MB in the beginning and 453.0 MB in the end (delta: 75.5 MB). Free memory was 355.9 MB in the beginning and 422.1 MB in the end (delta: -66.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:14,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 495.86 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 233.4 MB in the beginning and 341.3 MB in the end (delta: -108.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.98 ms. Allocated memory is still 377.5 MB. Free memory was 341.3 MB in the beginning and 339.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.68 ms. Allocated memory is still 377.5 MB. Free memory was 339.6 MB in the beginning and 338.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 479.49 ms. Allocated memory is still 377.5 MB. Free memory was 338.0 MB in the beginning and 355.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3244.54 ms. Allocated memory was 377.5 MB in the beginning and 453.0 MB in the end (delta: 75.5 MB). Free memory was 355.9 MB in the beginning and 422.1 MB in the end (delta: -66.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1657.6ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 667, positive: 631, positive conditional: 0, positive unconditional: 631, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 508, positive: 489, positive conditional: 0, positive unconditional: 489, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 508, positive: 489, positive conditional: 0, positive unconditional: 489, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 508, positive: 483, positive conditional: 0, positive unconditional: 483, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 667, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 508, unknown conditional: 0, unknown unconditional: 508] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3157.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 554.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1722.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 43 SDslu, 39 SDs, 0 SdLazy, 136 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 242.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, InterpolantAutomatonStates: 42, 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: 25.5ms SsaConstructionTime, 208.9ms SatisfiabilityAnalysisTime, 450.4ms InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 485 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...