/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:33:18,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:33:18,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:33:18,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:33:18,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:33:18,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:33:18,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:33:18,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:33:18,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:33:18,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:33:18,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:33:18,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:33:18,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:33:18,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:33:18,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:33:18,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:33:18,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 17:33:18,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:33:18,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:33:18,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:33:18,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:33:18,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:33:18,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:33:18,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:33:18,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:33:18,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:33:18,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:33:18,261 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:33:18,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:33:18,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:33:18,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:33:18,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:33:18,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:33:18,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:33:18,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:33:18,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:33:18,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:33:18,264 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:33:18,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:33:18,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:33:18,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:33:18,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:33:18,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:33:18,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:33:18,546 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:33:18,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-03-10 17:33:18,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57ae5a1e/f15ff7799a26496889f606330a6840c9/FLAGda427f74d [2021-03-10 17:33:18,993 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:33:18,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-03-10 17:33:19,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57ae5a1e/f15ff7799a26496889f606330a6840c9/FLAGda427f74d [2021-03-10 17:33:19,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57ae5a1e/f15ff7799a26496889f606330a6840c9 [2021-03-10 17:33:19,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:33:19,017 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:33:19,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:33:19,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:33:19,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:33:19,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5618da71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19, skipping insertion in model container [2021-03-10 17:33:19,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:33:19,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:33:19,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i[950,963] [2021-03-10 17:33:19,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:33:19,333 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:33:19,342 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i[950,963] [2021-03-10 17:33:19,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:33:19,411 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:33:19,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19 WrapperNode [2021-03-10 17:33:19,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:33:19,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:33:19,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:33:19,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:33:19,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:33:19,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:33:19,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:33:19,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:33:19,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (1/1) ... [2021-03-10 17:33:19,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:33:19,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:33:19,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:33:19,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:33:19,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (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 [2021-03-10 17:33:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:33:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:33:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:33:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:33:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:33:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:33:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:33:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:33:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:33:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:33:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:33:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:33:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:33:19,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:33:19,559 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:33:19,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:33:19,789 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:33:19,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:33:19 BoogieIcfgContainer [2021-03-10 17:33:19,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:33:19,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:33:19,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:33:19,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:33:19,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:33:19" (1/3) ... [2021-03-10 17:33:19,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e37800a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:33:19, skipping insertion in model container [2021-03-10 17:33:19,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:19" (2/3) ... [2021-03-10 17:33:19,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e37800a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:33:19, skipping insertion in model container [2021-03-10 17:33:19,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:33:19" (3/3) ... [2021-03-10 17:33:19,796 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2021-03-10 17:33:19,811 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:33:19,811 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:33:19,813 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:33:19,814 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:33:19,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,837 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,846 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,846 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:19,849 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:33:19,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:33:19,873 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:33:19,873 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:33:19,873 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:33:19,873 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:33:19,873 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:33:19,873 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:33:19,873 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:33:19,873 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:33:19,880 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:33:20,245 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:33:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:33:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:33:20,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:20,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:20,307 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:20,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-03-10 17:33:20,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:20,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738494936] [2021-03-10 17:33:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:20,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738494936] [2021-03-10 17:33:20,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:20,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:20,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599242743] [2021-03-10 17:33:20,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:20,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:20,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:20,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:20,697 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:33:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:21,061 INFO L93 Difference]: Finished difference Result 15286 states and 52289 transitions. [2021-03-10 17:33:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:33:21,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) Word has length 40 [2021-03-10 17:33:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:21,097 INFO L225 Difference]: With dead ends: 15286 [2021-03-10 17:33:21,097 INFO L226 Difference]: Without dead ends: 4096 [2021-03-10 17:33:21,098 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2021-03-10 17:33:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 3616. [2021-03-10 17:33:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.2401106500691563) internal successors, (11713), 3615 states have internal predecessors, (11713), 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) [2021-03-10 17:33:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 11713 transitions. [2021-03-10 17:33:21,229 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 11713 transitions. Word has length 40 [2021-03-10 17:33:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:21,230 INFO L480 AbstractCegarLoop]: Abstraction has 3616 states and 11713 transitions. [2021-03-10 17:33:21,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:33:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 11713 transitions. [2021-03-10 17:33:21,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:33:21,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:21,235 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:21,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:33:21,236 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:21,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1969166677, now seen corresponding path program 1 times [2021-03-10 17:33:21,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:21,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690115591] [2021-03-10 17:33:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:21,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690115591] [2021-03-10 17:33:21,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:21,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:21,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440484491] [2021-03-10 17:33:21,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:21,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:21,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:21,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:21,365 INFO L87 Difference]: Start difference. First operand 3616 states and 11713 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-03-10 17:33:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:21,558 INFO L93 Difference]: Finished difference Result 4430 states and 14220 transitions. [2021-03-10 17:33:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:33:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) Word has length 45 [2021-03-10 17:33:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:21,574 INFO L225 Difference]: With dead ends: 4430 [2021-03-10 17:33:21,575 INFO L226 Difference]: Without dead ends: 3870 [2021-03-10 17:33:21,576 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 189.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-03-10 17:33:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3016. [2021-03-10 17:33:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 3015 states have (on average 3.218242122719735) internal successors, (9703), 3015 states have internal predecessors, (9703), 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) [2021-03-10 17:33:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 9703 transitions. [2021-03-10 17:33:21,663 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 9703 transitions. Word has length 45 [2021-03-10 17:33:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:21,663 INFO L480 AbstractCegarLoop]: Abstraction has 3016 states and 9703 transitions. [2021-03-10 17:33:21,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-03-10 17:33:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 9703 transitions. [2021-03-10 17:33:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:33:21,671 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:21,671 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:21,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:33:21,672 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:21,672 INFO L82 PathProgramCache]: Analyzing trace with hash -899342017, now seen corresponding path program 1 times [2021-03-10 17:33:21,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:21,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670018929] [2021-03-10 17:33:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:21,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670018929] [2021-03-10 17:33:21,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:21,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:21,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151278644] [2021-03-10 17:33:21,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:21,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:21,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:21,807 INFO L87 Difference]: Start difference. First operand 3016 states and 9703 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-03-10 17:33:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:22,062 INFO L93 Difference]: Finished difference Result 4806 states and 15195 transitions. [2021-03-10 17:33:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:33:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) Word has length 45 [2021-03-10 17:33:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:22,077 INFO L225 Difference]: With dead ends: 4806 [2021-03-10 17:33:22,077 INFO L226 Difference]: Without dead ends: 3706 [2021-03-10 17:33:22,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 205.7ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:33:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-03-10 17:33:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 2720. [2021-03-10 17:33:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2719 states have (on average 3.1824200073556455) internal successors, (8653), 2719 states have internal predecessors, (8653), 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) [2021-03-10 17:33:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 8653 transitions. [2021-03-10 17:33:22,142 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 8653 transitions. Word has length 45 [2021-03-10 17:33:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:22,143 INFO L480 AbstractCegarLoop]: Abstraction has 2720 states and 8653 transitions. [2021-03-10 17:33:22,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-03-10 17:33:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 8653 transitions. [2021-03-10 17:33:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:33:22,147 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:22,147 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:22,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:33:22,148 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1877911748, now seen corresponding path program 1 times [2021-03-10 17:33:22,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:22,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267078837] [2021-03-10 17:33:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:22,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267078837] [2021-03-10 17:33:22,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:22,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:22,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246219692] [2021-03-10 17:33:22,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:22,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:22,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:22,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:22,253 INFO L87 Difference]: Start difference. First operand 2720 states and 8653 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-03-10 17:33:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:22,372 INFO L93 Difference]: Finished difference Result 3112 states and 9767 transitions. [2021-03-10 17:33:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:33:22,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) Word has length 47 [2021-03-10 17:33:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:22,379 INFO L225 Difference]: With dead ends: 3112 [2021-03-10 17:33:22,379 INFO L226 Difference]: Without dead ends: 1522 [2021-03-10 17:33:22,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:33:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-03-10 17:33:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1522. [2021-03-10 17:33:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.0289283366206443) internal successors, (4607), 1521 states have internal predecessors, (4607), 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) [2021-03-10 17:33:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4607 transitions. [2021-03-10 17:33:22,406 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4607 transitions. Word has length 47 [2021-03-10 17:33:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:22,406 INFO L480 AbstractCegarLoop]: Abstraction has 1522 states and 4607 transitions. [2021-03-10 17:33:22,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-03-10 17:33:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4607 transitions. [2021-03-10 17:33:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:33:22,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:22,409 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:22,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:33:22,409 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:22,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1624023968, now seen corresponding path program 1 times [2021-03-10 17:33:22,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:22,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968399222] [2021-03-10 17:33:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:22,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968399222] [2021-03-10 17:33:22,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:22,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:22,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980485125] [2021-03-10 17:33:22,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:22,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:22,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:22,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:22,503 INFO L87 Difference]: Start difference. First operand 1522 states and 4607 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-03-10 17:33:22,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:22,571 INFO L93 Difference]: Finished difference Result 2764 states and 8400 transitions. [2021-03-10 17:33:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:33:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) Word has length 48 [2021-03-10 17:33:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:22,590 INFO L225 Difference]: With dead ends: 2764 [2021-03-10 17:33:22,590 INFO L226 Difference]: Without dead ends: 1702 [2021-03-10 17:33:22,590 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 17:33:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-03-10 17:33:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1342. [2021-03-10 17:33:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 2.995525727069351) internal successors, (4017), 1341 states have internal predecessors, (4017), 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) [2021-03-10 17:33:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4017 transitions. [2021-03-10 17:33:22,613 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4017 transitions. Word has length 48 [2021-03-10 17:33:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:22,613 INFO L480 AbstractCegarLoop]: Abstraction has 1342 states and 4017 transitions. [2021-03-10 17:33:22,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-03-10 17:33:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4017 transitions. [2021-03-10 17:33:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:33:22,616 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:22,616 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:22,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:33:22,617 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1331825824, now seen corresponding path program 2 times [2021-03-10 17:33:22,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:22,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904699199] [2021-03-10 17:33:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:22,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904699199] [2021-03-10 17:33:22,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:22,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:33:22,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841815447] [2021-03-10 17:33:22,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:33:22,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:22,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:33:22,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:33:22,701 INFO L87 Difference]: Start difference. First operand 1342 states and 4017 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:33:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:22,789 INFO L93 Difference]: Finished difference Result 2134 states and 6403 transitions. [2021-03-10 17:33:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:33:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) Word has length 48 [2021-03-10 17:33:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:22,793 INFO L225 Difference]: With dead ends: 2134 [2021-03-10 17:33:22,793 INFO L226 Difference]: Without dead ends: 1252 [2021-03-10 17:33:22,794 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:33:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-03-10 17:33:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-03-10 17:33:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 2.9752198241406873) internal successors, (3722), 1251 states have internal predecessors, (3722), 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) [2021-03-10 17:33:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3722 transitions. [2021-03-10 17:33:22,812 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3722 transitions. Word has length 48 [2021-03-10 17:33:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:22,812 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 3722 transitions. [2021-03-10 17:33:22,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:33:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3722 transitions. [2021-03-10 17:33:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:33:22,814 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:22,814 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:22,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:33:22,814 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1693807934, now seen corresponding path program 3 times [2021-03-10 17:33:22,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:22,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734747223] [2021-03-10 17:33:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:22,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734747223] [2021-03-10 17:33:22,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:22,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:33:22,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217690030] [2021-03-10 17:33:22,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:33:22,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:22,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:33:22,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:33:22,896 INFO L87 Difference]: Start difference. First operand 1252 states and 3722 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-03-10 17:33:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:22,967 INFO L93 Difference]: Finished difference Result 1453 states and 4273 transitions. [2021-03-10 17:33:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:33:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) Word has length 48 [2021-03-10 17:33:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:22,970 INFO L225 Difference]: With dead ends: 1453 [2021-03-10 17:33:22,970 INFO L226 Difference]: Without dead ends: 1117 [2021-03-10 17:33:22,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:22,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2021-03-10 17:33:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1117. [2021-03-10 17:33:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.931899641577061) internal successors, (3272), 1116 states have internal predecessors, (3272), 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) [2021-03-10 17:33:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 3272 transitions. [2021-03-10 17:33:22,989 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 3272 transitions. Word has length 48 [2021-03-10 17:33:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:22,989 INFO L480 AbstractCegarLoop]: Abstraction has 1117 states and 3272 transitions. [2021-03-10 17:33:22,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-03-10 17:33:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 3272 transitions. [2021-03-10 17:33:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:33:22,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:22,991 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:22,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:33:22,991 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:22,991 INFO L82 PathProgramCache]: Analyzing trace with hash 426907737, now seen corresponding path program 1 times [2021-03-10 17:33:22,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:22,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474532469] [2021-03-10 17:33:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474532469] [2021-03-10 17:33:23,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:23,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:23,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433366320] [2021-03-10 17:33:23,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:23,068 INFO L87 Difference]: Start difference. First operand 1117 states and 3272 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-03-10 17:33:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:23,153 INFO L93 Difference]: Finished difference Result 1009 states and 2852 transitions. [2021-03-10 17:33:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:33:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) Word has length 49 [2021-03-10 17:33:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:23,157 INFO L225 Difference]: With dead ends: 1009 [2021-03-10 17:33:23,157 INFO L226 Difference]: Without dead ends: 757 [2021-03-10 17:33:23,158 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:33:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-03-10 17:33:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2021-03-10 17:33:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 2.7605820105820107) internal successors, (2087), 756 states have internal predecessors, (2087), 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) [2021-03-10 17:33:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2087 transitions. [2021-03-10 17:33:23,170 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2087 transitions. Word has length 49 [2021-03-10 17:33:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:23,171 INFO L480 AbstractCegarLoop]: Abstraction has 757 states and 2087 transitions. [2021-03-10 17:33:23,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-03-10 17:33:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2087 transitions. [2021-03-10 17:33:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:33:23,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:23,172 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:23,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:33:23,172 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash -186806888, now seen corresponding path program 1 times [2021-03-10 17:33:23,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:23,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973781070] [2021-03-10 17:33:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:23,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973781070] [2021-03-10 17:33:23,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:23,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:33:23,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70540592] [2021-03-10 17:33:23,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:33:23,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:23,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:33:23,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:33:23,270 INFO L87 Difference]: Start difference. First operand 757 states and 2087 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-03-10 17:33:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:23,324 INFO L93 Difference]: Finished difference Result 460 states and 1196 transitions. [2021-03-10 17:33:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:33:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) Word has length 50 [2021-03-10 17:33:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:23,324 INFO L225 Difference]: With dead ends: 460 [2021-03-10 17:33:23,324 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:33:23,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:33:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:33:23,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:33:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-03-10 17:33:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:33:23,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-03-10 17:33:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:23,325 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:33:23,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-03-10 17:33:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:33:23,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:33:23,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:33:23,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:33:23 BasicIcfg [2021-03-10 17:33:23,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:33:23,330 INFO L168 Benchmark]: Toolchain (without parser) took 4315.76 ms. Allocated memory was 385.9 MB in the beginning and 507.5 MB in the end (delta: 121.6 MB). Free memory was 348.7 MB in the beginning and 428.2 MB in the end (delta: -79.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:23,330 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 385.9 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:33:23,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.47 ms. Allocated memory is still 385.9 MB. Free memory was 348.2 MB in the beginning and 348.9 MB in the end (delta: -683.7 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:23,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.85 ms. Allocated memory is still 385.9 MB. Free memory was 348.9 MB in the beginning and 346.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:23,332 INFO L168 Benchmark]: Boogie Preprocessor took 31.86 ms. Allocated memory is still 385.9 MB. Free memory was 346.8 MB in the beginning and 345.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:33:23,332 INFO L168 Benchmark]: RCFGBuilder took 305.98 ms. Allocated memory is still 385.9 MB. Free memory was 345.7 MB in the beginning and 321.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:23,333 INFO L168 Benchmark]: TraceAbstraction took 3537.11 ms. Allocated memory was 385.9 MB in the beginning and 507.5 MB in the end (delta: 121.6 MB). Free memory was 321.6 MB in the beginning and 428.2 MB in the end (delta: -106.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:23,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 385.9 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 394.47 ms. Allocated memory is still 385.9 MB. Free memory was 348.2 MB in the beginning and 348.9 MB in the end (delta: -683.7 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.85 ms. Allocated memory is still 385.9 MB. Free memory was 348.9 MB in the beginning and 346.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.86 ms. Allocated memory is still 385.9 MB. Free memory was 346.8 MB in the beginning and 345.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 305.98 ms. Allocated memory is still 385.9 MB. Free memory was 345.7 MB in the beginning and 321.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3537.11 ms. Allocated memory was 385.9 MB in the beginning and 507.5 MB in the end (delta: 121.6 MB). Free memory was 321.6 MB in the beginning and 428.2 MB in the end (delta: -106.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3454.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 85.1ms, AutomataDifference: 1440.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 372.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 808 SDtfs, 1461 SDslu, 2829 SDs, 0 SdLazy, 355 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 231.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1031.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 371.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 2680 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.7ms SsaConstructionTime, 189.8ms SatisfiabilityAnalysisTime, 810.5ms InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 1445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...