/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:01:39,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:01:39,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:01:39,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:01:39,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:01:39,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:01:39,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:01:39,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:01:39,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:01:39,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:01:39,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:01:39,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:01:39,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:01:39,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:01:39,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:01:39,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:01:39,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:01:39,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:01:39,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:01:39,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:01:39,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:01:39,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:01:39,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:01:39,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:01:39,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:01:39,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:01:39,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:01:39,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:01:39,212 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-VariableLbe.epf [2021-03-24 11:01:39,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:01:39,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:01:39,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:01:39,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:01:39,234 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:01:39,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:01:39,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:01:39,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:01:39,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:01:39,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:01:39,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:01:39,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:01:39,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:01:39,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:01:39,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:01:39,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:01:39,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:01:39,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:01:39,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:01:39,523 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:01:39,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-03-24 11:01:39,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a329125/3eedbed070c5438e8fa4d87681271c10/FLAG168824df8 [2021-03-24 11:01:40,047 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:01:40,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-03-24 11:01:40,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a329125/3eedbed070c5438e8fa4d87681271c10/FLAG168824df8 [2021-03-24 11:01:40,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a329125/3eedbed070c5438e8fa4d87681271c10 [2021-03-24 11:01:40,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:01:40,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:01:40,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:01:40,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:01:40,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:01:40,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c7570c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40, skipping insertion in model container [2021-03-24 11:01:40,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:01:40,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:01:40,293 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/safe008_tso.oepc.i[950,963] [2021-03-24 11:01:40,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:01:40,431 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:01:40,438 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/safe008_tso.oepc.i[950,963] [2021-03-24 11:01:40,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:01:40,538 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:01:40,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40 WrapperNode [2021-03-24 11:01:40,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:01:40,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:01:40,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:01:40,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:01:40,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:01:40,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:01:40,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:01:40,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:01:40,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (1/1) ... [2021-03-24 11:01:40,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:01:40,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:01:40,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:01:40,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:01:40,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (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 11:01:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:01:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:01:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:01:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:01:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:01:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:01:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:01:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:01:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:01:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:01:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:01:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:01:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:01:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:01:40,696 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 11:01:40,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:01:40,923 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:01:40,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:01:40 BoogieIcfgContainer [2021-03-24 11:01:40,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:01:40,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:01:40,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:01:40,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:01:40,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:01:40" (1/3) ... [2021-03-24 11:01:40,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa1e9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:01:40, skipping insertion in model container [2021-03-24 11:01:40,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:40" (2/3) ... [2021-03-24 11:01:40,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa1e9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:01:40, skipping insertion in model container [2021-03-24 11:01:40,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:01:40" (3/3) ... [2021-03-24 11:01:40,929 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2021-03-24 11:01:40,932 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:01:40,935 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:01:40,936 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:01:40,956 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,958 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,962 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,962 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,963 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,963 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,963 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,963 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,963 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,963 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,978 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,978 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:40,980 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:01:40,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:01:41,015 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:01:41,015 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:01:41,015 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:01:41,015 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:01:41,015 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:01:41,015 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:01:41,015 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:01:41,015 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:01:41,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:01:41,070 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 11:01:41,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:41,079 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 49 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 11:01:41,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:01:41,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 11:01:41,088 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:01:41,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:01:41,101 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:01:41,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 11:01:41,125 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 11:01:41,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:41,125 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 11:01:41,127 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 11:01:42,301 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 11:01:42,301 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 11:01:42,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1215 [2021-03-24 11:01:42,308 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 11:01:42,308 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:42,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:42,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:42,309 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash 775848287, now seen corresponding path program 1 times [2021-03-24 11:01:42,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:42,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260637204] [2021-03-24 11:01:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:42,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,466 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:42,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:42,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,478 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 11:01:42,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260637204] [2021-03-24 11:01:42,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:42,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:01:42,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482285051] [2021-03-24 11:01:42,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:01:42,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:42,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:01:42,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:01:42,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2021-03-24 11:01:42,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 11:01:42,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:42,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2021-03-24 11:01:42,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:42,544 INFO L129 PetriNetUnfolder]: 47/138 cut-off events. [2021-03-24 11:01:42,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:42,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 138 events. 47/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 574 event pairs, 7 based on Foata normal form. 15/146 useless extension candidates. Maximal degree in co-relation 235. Up to 49 conditions per place. [2021-03-24 11:01:42,546 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 8 selfloop transitions, 5 changer transitions 10/36 dead transitions. [2021-03-24 11:01:42,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 127 flow [2021-03-24 11:01:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:01:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:01:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2021-03-24 11:01:42,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7820197044334976 [2021-03-24 11:01:42,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2021-03-24 11:01:42,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2021-03-24 11:01:42,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:42,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2021-03-24 11:01:42,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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 11:01:42,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:42,569 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:42,570 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 635 transitions. [2021-03-24 11:01:42,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 127 flow [2021-03-24 11:01:42,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:01:42,573 INFO L241 Difference]: Finished difference. Result has 39 places, 23 transitions, 85 flow [2021-03-24 11:01:42,574 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=85, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2021-03-24 11:01:42,575 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-24 11:01:42,575 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 85 flow [2021-03-24 11:01:42,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 11:01:42,575 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:42,576 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:42,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:01:42,576 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:42,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:42,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1718526481, now seen corresponding path program 1 times [2021-03-24 11:01:42,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:42,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534105480] [2021-03-24 11:01:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:42,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:42,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,647 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:42,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:42,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,658 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 11:01:42,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534105480] [2021-03-24 11:01:42,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:42,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:01:42,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729359620] [2021-03-24 11:01:42,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:01:42,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:01:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:01:42,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 116 [2021-03-24 11:01:42,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 11:01:42,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:42,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 116 [2021-03-24 11:01:42,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:42,761 INFO L129 PetriNetUnfolder]: 75/218 cut-off events. [2021-03-24 11:01:42,762 INFO L130 PetriNetUnfolder]: For 354/385 co-relation queries the response was YES. [2021-03-24 11:01:42,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 218 events. 75/218 cut-off events. For 354/385 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1137 event pairs, 2 based on Foata normal form. 24/240 useless extension candidates. Maximal degree in co-relation 602. Up to 72 conditions per place. [2021-03-24 11:01:42,766 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 13 selfloop transitions, 13 changer transitions 17/55 dead transitions. [2021-03-24 11:01:42,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 344 flow [2021-03-24 11:01:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:01:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:01:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 806 transitions. [2021-03-24 11:01:42,770 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7720306513409961 [2021-03-24 11:01:42,771 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 806 transitions. [2021-03-24 11:01:42,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 806 transitions. [2021-03-24 11:01:42,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:42,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 806 transitions. [2021-03-24 11:01:42,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 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 11:01:42,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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 11:01:42,779 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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 11:01:42,779 INFO L185 Difference]: Start difference. First operand has 39 places, 23 transitions, 85 flow. Second operand 9 states and 806 transitions. [2021-03-24 11:01:42,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 344 flow [2021-03-24 11:01:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 306 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 11:01:42,783 INFO L241 Difference]: Finished difference. Result has 48 places, 31 transitions, 195 flow [2021-03-24 11:01:42,783 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2021-03-24 11:01:42,784 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 11:01:42,784 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 195 flow [2021-03-24 11:01:42,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 11:01:42,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:42,784 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:42,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:01:42,784 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1752350974, now seen corresponding path program 1 times [2021-03-24 11:01:42,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:42,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140995133] [2021-03-24 11:01:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:42,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,866 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:42,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:42,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,874 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 11:01:42,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140995133] [2021-03-24 11:01:42,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:42,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:01:42,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940851556] [2021-03-24 11:01:42,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:01:42,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:01:42,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:01:42,876 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2021-03-24 11:01:42,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 195 flow. Second operand has 5 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 11:01:42,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:42,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2021-03-24 11:01:42,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:42,920 INFO L129 PetriNetUnfolder]: 37/141 cut-off events. [2021-03-24 11:01:42,920 INFO L130 PetriNetUnfolder]: For 524/579 co-relation queries the response was YES. [2021-03-24 11:01:42,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 141 events. 37/141 cut-off events. For 524/579 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 635 event pairs, 2 based on Foata normal form. 13/153 useless extension candidates. Maximal degree in co-relation 564. Up to 44 conditions per place. [2021-03-24 11:01:42,922 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 15 selfloop transitions, 9 changer transitions 6/44 dead transitions. [2021-03-24 11:01:42,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 369 flow [2021-03-24 11:01:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:01:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:01:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2021-03-24 11:01:42,924 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7746305418719212 [2021-03-24 11:01:42,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2021-03-24 11:01:42,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2021-03-24 11:01:42,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:42,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2021-03-24 11:01:42,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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 11:01:42,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:42,930 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:42,934 INFO L185 Difference]: Start difference. First operand has 48 places, 31 transitions, 195 flow. Second operand 7 states and 629 transitions. [2021-03-24 11:01:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 369 flow [2021-03-24 11:01:42,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 341 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-03-24 11:01:42,939 INFO L241 Difference]: Finished difference. Result has 53 places, 34 transitions, 257 flow [2021-03-24 11:01:42,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2021-03-24 11:01:42,940 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-24 11:01:42,940 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 257 flow [2021-03-24 11:01:42,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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 11:01:42,940 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:42,940 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:42,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:01:42,941 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:42,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1752380765, now seen corresponding path program 1 times [2021-03-24 11:01:42,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:42,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88236703] [2021-03-24 11:01:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:42,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:42,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:42,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:42,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,002 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:43,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:43,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,014 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 11:01:43,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88236703] [2021-03-24 11:01:43,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:43,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:01:43,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229873560] [2021-03-24 11:01:43,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:01:43,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:01:43,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:01:43,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 116 [2021-03-24 11:01:43,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 257 flow. Second operand has 6 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 11:01:43,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:43,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 116 [2021-03-24 11:01:43,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:43,072 INFO L129 PetriNetUnfolder]: 38/138 cut-off events. [2021-03-24 11:01:43,073 INFO L130 PetriNetUnfolder]: For 658/722 co-relation queries the response was YES. [2021-03-24 11:01:43,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 138 events. 38/138 cut-off events. For 658/722 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 614 event pairs, 3 based on Foata normal form. 15/151 useless extension candidates. Maximal degree in co-relation 610. Up to 45 conditions per place. [2021-03-24 11:01:43,073 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 9 selfloop transitions, 6 changer transitions 24/51 dead transitions. [2021-03-24 11:01:43,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 512 flow [2021-03-24 11:01:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:01:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:01:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2021-03-24 11:01:43,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2021-03-24 11:01:43,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2021-03-24 11:01:43,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2021-03-24 11:01:43,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:43,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2021-03-24 11:01:43,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 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 11:01:43,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:43,098 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:43,098 INFO L185 Difference]: Start difference. First operand has 53 places, 34 transitions, 257 flow. Second operand 7 states and 620 transitions. [2021-03-24 11:01:43,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 512 flow [2021-03-24 11:01:43,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 482 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 11:01:43,101 INFO L241 Difference]: Finished difference. Result has 55 places, 24 transitions, 163 flow [2021-03-24 11:01:43,102 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=24} [2021-03-24 11:01:43,102 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-24 11:01:43,102 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 24 transitions, 163 flow [2021-03-24 11:01:43,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 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 11:01:43,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:43,102 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:43,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:01:43,102 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1367981527, now seen corresponding path program 1 times [2021-03-24 11:01:43,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:43,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358070588] [2021-03-24 11:01:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:43,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:43,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,156 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:43,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:43,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,167 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 11:01:43,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358070588] [2021-03-24 11:01:43,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:43,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:01:43,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606290091] [2021-03-24 11:01:43,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:01:43,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:43,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:01:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:01:43,169 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 11:01:43,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 24 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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 11:01:43,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:43,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 11:01:43,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:43,203 INFO L129 PetriNetUnfolder]: 10/67 cut-off events. [2021-03-24 11:01:43,204 INFO L130 PetriNetUnfolder]: For 347/358 co-relation queries the response was YES. [2021-03-24 11:01:43,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 67 events. 10/67 cut-off events. For 347/358 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 0 based on Foata normal form. 10/77 useless extension candidates. Maximal degree in co-relation 276. Up to 16 conditions per place. [2021-03-24 11:01:43,205 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 6 selfloop transitions, 5 changer transitions 15/37 dead transitions. [2021-03-24 11:01:43,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 37 transitions, 364 flow [2021-03-24 11:01:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:01:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:01:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2021-03-24 11:01:43,207 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7450738916256158 [2021-03-24 11:01:43,207 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2021-03-24 11:01:43,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2021-03-24 11:01:43,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:43,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2021-03-24 11:01:43,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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 11:01:43,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:43,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:43,210 INFO L185 Difference]: Start difference. First operand has 55 places, 24 transitions, 163 flow. Second operand 7 states and 605 transitions. [2021-03-24 11:01:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 37 transitions, 364 flow [2021-03-24 11:01:43,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 219 flow, removed 22 selfloop flow, removed 17 redundant places. [2021-03-24 11:01:43,211 INFO L241 Difference]: Finished difference. Result has 46 places, 21 transitions, 101 flow [2021-03-24 11:01:43,212 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2021-03-24 11:01:43,212 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2021-03-24 11:01:43,212 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 101 flow [2021-03-24 11:01:43,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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 11:01:43,213 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:43,213 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 11:01:43,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:01:43,214 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1205534868, now seen corresponding path program 1 times [2021-03-24 11:01:43,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:43,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434757538] [2021-03-24 11:01:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:43,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:43,257 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 11:01:43,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434757538] [2021-03-24 11:01:43,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:43,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:01:43,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014205095] [2021-03-24 11:01:43,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:01:43,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:43,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:01:43,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:01:43,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 11:01:43,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 11:01:43,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:43,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 11:01:43,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:43,284 INFO L129 PetriNetUnfolder]: 23/72 cut-off events. [2021-03-24 11:01:43,285 INFO L130 PetriNetUnfolder]: For 185/196 co-relation queries the response was YES. [2021-03-24 11:01:43,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 72 events. 23/72 cut-off events. For 185/196 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 222 event pairs, 9 based on Foata normal form. 5/72 useless extension candidates. Maximal degree in co-relation 168. Up to 39 conditions per place. [2021-03-24 11:01:43,285 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 3 changer transitions 8/31 dead transitions. [2021-03-24 11:01:43,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 31 transitions, 153 flow [2021-03-24 11:01:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:01:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:01:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-24 11:01:43,286 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2021-03-24 11:01:43,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-24 11:01:43,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-24 11:01:43,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:43,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-24 11:01:43,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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 11:01:43,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 11:01:43,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 11:01:43,289 INFO L185 Difference]: Start difference. First operand has 46 places, 21 transitions, 101 flow. Second operand 5 states and 448 transitions. [2021-03-24 11:01:43,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 31 transitions, 153 flow [2021-03-24 11:01:43,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 31 transitions, 122 flow, removed 8 selfloop flow, removed 9 redundant places. [2021-03-24 11:01:43,293 INFO L241 Difference]: Finished difference. Result has 42 places, 23 transitions, 101 flow [2021-03-24 11:01:43,293 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2021-03-24 11:01:43,293 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-24 11:01:43,293 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 101 flow [2021-03-24 11:01:43,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 11:01:43,293 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:43,293 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 11:01:43,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:01:43,294 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1382212174, now seen corresponding path program 1 times [2021-03-24 11:01:43,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:43,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093325396] [2021-03-24 11:01:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:43,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:43,346 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 11:01:43,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093325396] [2021-03-24 11:01:43,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:43,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:01:43,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428971559] [2021-03-24 11:01:43,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:01:43,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:01:43,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:01:43,348 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 11:01:43,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 11:01:43,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:43,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 11:01:43,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:43,375 INFO L129 PetriNetUnfolder]: 9/44 cut-off events. [2021-03-24 11:01:43,375 INFO L130 PetriNetUnfolder]: For 78/117 co-relation queries the response was YES. [2021-03-24 11:01:43,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 44 events. 9/44 cut-off events. For 78/117 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 1 based on Foata normal form. 10/52 useless extension candidates. Maximal degree in co-relation 128. Up to 27 conditions per place. [2021-03-24 11:01:43,375 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 3 selfloop transitions, 5 changer transitions 10/33 dead transitions. [2021-03-24 11:01:43,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 195 flow [2021-03-24 11:01:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:01:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:01:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2021-03-24 11:01:43,377 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7701149425287356 [2021-03-24 11:01:43,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 536 transitions. [2021-03-24 11:01:43,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 536 transitions. [2021-03-24 11:01:43,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:43,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 536 transitions. [2021-03-24 11:01:43,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 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 11:01:43,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 11:01:43,379 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 11:01:43,379 INFO L185 Difference]: Start difference. First operand has 42 places, 23 transitions, 101 flow. Second operand 6 states and 536 transitions. [2021-03-24 11:01:43,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 195 flow [2021-03-24 11:01:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 187 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-24 11:01:43,380 INFO L241 Difference]: Finished difference. Result has 45 places, 23 transitions, 117 flow [2021-03-24 11:01:43,381 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2021-03-24 11:01:43,381 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2021-03-24 11:01:43,381 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 117 flow [2021-03-24 11:01:43,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 11:01:43,382 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:43,382 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 11:01:43,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:01:43,382 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:43,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1670255538, now seen corresponding path program 1 times [2021-03-24 11:01:43,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:43,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365458626] [2021-03-24 11:01:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:43,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:43,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:43,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:43,436 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 11:01:43,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365458626] [2021-03-24 11:01:43,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:43,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:01:43,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147911799] [2021-03-24 11:01:43,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:01:43,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:43,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:01:43,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:01:43,437 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 11:01:43,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 11:01:43,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:43,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 11:01:43,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:43,458 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-03-24 11:01:43,458 INFO L130 PetriNetUnfolder]: For 56/78 co-relation queries the response was YES. [2021-03-24 11:01:43,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 23 events. 1/23 cut-off events. For 56/78 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 7/30 useless extension candidates. Maximal degree in co-relation 72. Up to 9 conditions per place. [2021-03-24 11:01:43,458 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2021-03-24 11:01:43,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 23 transitions, 137 flow [2021-03-24 11:01:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:01:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:01:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2021-03-24 11:01:43,460 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7536945812807881 [2021-03-24 11:01:43,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2021-03-24 11:01:43,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2021-03-24 11:01:43,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:43,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2021-03-24 11:01:43,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 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 11:01:43,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:43,463 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 11:01:43,463 INFO L185 Difference]: Start difference. First operand has 45 places, 23 transitions, 117 flow. Second operand 7 states and 612 transitions. [2021-03-24 11:01:43,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 23 transitions, 137 flow [2021-03-24 11:01:43,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 23 transitions, 110 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 11:01:43,465 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2021-03-24 11:01:43,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2021-03-24 11:01:43,465 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-24 11:01:43,465 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2021-03-24 11:01:43,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 11:01:43,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:01:43,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:01:43 BasicIcfg [2021-03-24 11:01:43,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:01:43,471 INFO L168 Benchmark]: Toolchain (without parser) took 3345.67 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 324.0 MB in the beginning and 333.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:43,471 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 360.7 MB. Free memory was 342.2 MB in the beginning and 342.1 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:01:43,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.19 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 322.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:43,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 360.7 MB. Free memory was 322.7 MB in the beginning and 320.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:43,474 INFO L168 Benchmark]: Boogie Preprocessor took 40.16 ms. Allocated memory is still 360.7 MB. Free memory was 320.6 MB in the beginning and 318.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:43,475 INFO L168 Benchmark]: RCFGBuilder took 297.99 ms. Allocated memory is still 360.7 MB. Free memory was 318.9 MB in the beginning and 295.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:43,476 INFO L168 Benchmark]: TraceAbstraction took 2543.18 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 294.4 MB in the beginning and 333.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:43,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 360.7 MB. Free memory was 342.2 MB in the beginning and 342.1 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 416.19 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 322.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 360.7 MB. Free memory was 322.7 MB in the beginning and 320.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 40.16 ms. Allocated memory is still 360.7 MB. Free memory was 320.6 MB in the beginning and 318.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 297.99 ms. Allocated memory is still 360.7 MB. Free memory was 318.9 MB in the beginning and 295.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2543.18 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 294.4 MB in the beginning and 333.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1199.9ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 804, positive: 757, positive conditional: 0, positive unconditional: 757, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 451, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 451, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 804, positive: 328, positive conditional: 0, positive unconditional: 328, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 451, unknown conditional: 0, unknown unconditional: 451] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2454.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 499.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1290.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 102 SDslu, 99 SDs, 0 SdLazy, 154 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 161.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=3, InterpolantAutomatonStates: 55, 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: 18.3ms SsaConstructionTime, 157.0ms SatisfiabilityAnalysisTime, 340.4ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 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...