/usr/bin/java -Xmx8000000000 -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/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:40:31,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:40:31,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:40:31,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 11:40:31,172 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 [2021-08-21 11:40:31,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:40:31,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:40:31,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:40:31,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:40:31,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:40:31,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:40:31,193 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:40:31,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:40:31,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:40:31,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:40:31,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:40:31,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:40:31,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:40:31,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:40:31,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:40:31,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:40:31,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:40:31,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:40:31,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:40:31,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:40:31,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:40:31,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:40:31,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:40:31,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:40:31,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:40:31,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:40:31,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:40:31,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:40:31,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:40:31,488 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:40:31,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-08-21 11:40:31,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6130c086c/2d3bdeb05a1f4f8585a13cda2d3a7a30/FLAG4cdf5981d [2021-08-21 11:40:32,042 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:40:32,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-08-21 11:40:32,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6130c086c/2d3bdeb05a1f4f8585a13cda2d3a7a30/FLAG4cdf5981d [2021-08-21 11:40:32,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6130c086c/2d3bdeb05a1f4f8585a13cda2d3a7a30 [2021-08-21 11:40:32,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:40:32,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:40:32,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:40:32,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:40:32,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:40:32,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277fe0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32, skipping insertion in model container [2021-08-21 11:40:32,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:40:32,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:40:32,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i[949,962] [2021-08-21 11:40:32,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:40:32,865 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:40:32,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i[949,962] [2021-08-21 11:40:32,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:40:32,925 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:40:32,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32 WrapperNode [2021-08-21 11:40:32,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:40:32,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:40:32,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:40:32,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:40:32,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:40:32,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:40:32,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:40:32,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:40:32,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:40:32,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:40:32,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:40:32,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:40:32,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (1/1) ... [2021-08-21 11:40:32,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:40:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:40:33,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 11:40:33,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 11:40:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 11:40:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 11:40:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 11:40:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 11:40:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:40:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:40:33,063 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:40:33,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:40:33,391 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 11:40:33,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:40:33 BoogieIcfgContainer [2021-08-21 11:40:33,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:40:33,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:40:33,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:40:33,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:40:33,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:40:32" (1/3) ... [2021-08-21 11:40:33,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f53f341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:40:33, skipping insertion in model container [2021-08-21 11:40:33,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:32" (2/3) ... [2021-08-21 11:40:33,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f53f341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:40:33, skipping insertion in model container [2021-08-21 11:40:33,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:40:33" (3/3) ... [2021-08-21 11:40:33,397 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-08-21 11:40:33,401 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:40:33,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:40:33,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 11:40:33,401 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:40:33,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,432 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,439 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,439 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,442 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,442 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,443 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,443 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,444 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,444 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,451 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,452 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:40:33,458 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 11:40:33,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:40:33,495 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 11:40:33,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 11:40:33,502 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-08-21 11:40:33,648 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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) [2021-08-21 11:40:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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) [2021-08-21 11:40:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-21 11:40:33,691 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:33,692 INFO L512 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] [2021-08-21 11:40:33,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:33,696 INFO L82 PathProgramCache]: Analyzing trace with hash -222012670, now seen corresponding path program 1 times [2021-08-21 11:40:33,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:33,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384900205] [2021-08-21 11:40:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:33,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:34,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:34,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384900205] [2021-08-21 11:40:34,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384900205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:34,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:34,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:40:34,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761685353] [2021-08-21 11:40:34,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:40:34,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:40:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:40:34,139 INFO L87 Difference]: Start difference. First operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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 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) [2021-08-21 11:40:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:34,427 INFO L93 Difference]: Finished difference Result 6342 states and 21546 transitions. [2021-08-21 11:40:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 11:40:34,429 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 [2021-08-21 11:40:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:34,470 INFO L225 Difference]: With dead ends: 6342 [2021-08-21 11:40:34,471 INFO L226 Difference]: Without dead ends: 4627 [2021-08-21 11:40:34,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:40:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-08-21 11:40:34,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2021-08-21 11:40:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4626 states have (on average 3.3865110246433203) internal successors, (15666), 4626 states have internal predecessors, (15666), 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) [2021-08-21 11:40:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 15666 transitions. [2021-08-21 11:40:34,669 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 15666 transitions. Word has length 48 [2021-08-21 11:40:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:34,670 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 15666 transitions. [2021-08-21 11:40:34,671 INFO L471 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) [2021-08-21 11:40:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 15666 transitions. [2021-08-21 11:40:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-21 11:40:34,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:34,689 INFO L512 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] [2021-08-21 11:40:34,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:40:34,690 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:34,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1843951869, now seen corresponding path program 1 times [2021-08-21 11:40:34,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:34,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153061381] [2021-08-21 11:40:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:34,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:34,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:34,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153061381] [2021-08-21 11:40:34,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153061381] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:34,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:34,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:40:34,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188890955] [2021-08-21 11:40:34,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:40:34,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:40:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:40:34,883 INFO L87 Difference]: Start difference. First operand 4627 states and 15666 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-08-21 11:40:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:35,199 INFO L93 Difference]: Finished difference Result 8831 states and 29448 transitions. [2021-08-21 11:40:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:40:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 [2021-08-21 11:40:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:35,231 INFO L225 Difference]: With dead ends: 8831 [2021-08-21 11:40:35,231 INFO L226 Difference]: Without dead ends: 6251 [2021-08-21 11:40:35,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 203.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:40:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-08-21 11:40:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 4831. [2021-08-21 11:40:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4830 states have (on average 3.2873706004140786) internal successors, (15878), 4830 states have internal predecessors, (15878), 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) [2021-08-21 11:40:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 15878 transitions. [2021-08-21 11:40:35,379 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 15878 transitions. Word has length 50 [2021-08-21 11:40:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:35,380 INFO L470 AbstractCegarLoop]: Abstraction has 4831 states and 15878 transitions. [2021-08-21 11:40:35,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-08-21 11:40:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 15878 transitions. [2021-08-21 11:40:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:40:35,390 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:35,390 INFO L512 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, 1, 1] [2021-08-21 11:40:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:40:35,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash -45944478, now seen corresponding path program 1 times [2021-08-21 11:40:35,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:35,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978904060] [2021-08-21 11:40:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:35,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:35,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:35,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978904060] [2021-08-21 11:40:35,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978904060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:35,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:35,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:40:35,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844036601] [2021-08-21 11:40:35,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:40:35,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:40:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:40:35,537 INFO L87 Difference]: Start difference. First operand 4831 states and 15878 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-08-21 11:40:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:35,765 INFO L93 Difference]: Finished difference Result 5849 states and 18906 transitions. [2021-08-21 11:40:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:40:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-08-21 11:40:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:35,777 INFO L225 Difference]: With dead ends: 5849 [2021-08-21 11:40:35,777 INFO L226 Difference]: Without dead ends: 2645 [2021-08-21 11:40:35,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 11:40:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-08-21 11:40:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2645. [2021-08-21 11:40:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 3.105521936459909) internal successors, (8211), 2644 states have internal predecessors, (8211), 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) [2021-08-21 11:40:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 8211 transitions. [2021-08-21 11:40:35,832 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 8211 transitions. Word has length 52 [2021-08-21 11:40:35,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:35,833 INFO L470 AbstractCegarLoop]: Abstraction has 2645 states and 8211 transitions. [2021-08-21 11:40:35,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-08-21 11:40:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 8211 transitions. [2021-08-21 11:40:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 11:40:35,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:35,838 INFO L512 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, 1, 1, 1] [2021-08-21 11:40:35,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:40:35,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:35,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1601565888, now seen corresponding path program 1 times [2021-08-21 11:40:35,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:35,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88517164] [2021-08-21 11:40:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:35,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:35,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:35,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88517164] [2021-08-21 11:40:35,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88517164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:35,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:35,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:40:35,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056041869] [2021-08-21 11:40:35,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:40:35,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:40:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:40:35,938 INFO L87 Difference]: Start difference. First operand 2645 states and 8211 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-08-21 11:40:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:36,088 INFO L93 Difference]: Finished difference Result 3681 states and 11436 transitions. [2021-08-21 11:40:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:40:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-08-21 11:40:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:36,101 INFO L225 Difference]: With dead ends: 3681 [2021-08-21 11:40:36,101 INFO L226 Difference]: Without dead ends: 3057 [2021-08-21 11:40:36,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:40:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-08-21 11:40:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2405. [2021-08-21 11:40:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 3.074459234608985) internal successors, (7391), 2404 states have internal predecessors, (7391), 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) [2021-08-21 11:40:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 7391 transitions. [2021-08-21 11:40:36,157 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 7391 transitions. Word has length 53 [2021-08-21 11:40:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:36,157 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 7391 transitions. [2021-08-21 11:40:36,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-08-21 11:40:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 7391 transitions. [2021-08-21 11:40:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-21 11:40:36,162 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:36,162 INFO L512 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, 1, 1, 1, 1, 1] [2021-08-21 11:40:36,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:40:36,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1298124613, now seen corresponding path program 1 times [2021-08-21 11:40:36,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:36,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221554312] [2021-08-21 11:40:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:36,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:36,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:36,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221554312] [2021-08-21 11:40:36,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221554312] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:36,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:36,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:40:36,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433118659] [2021-08-21 11:40:36,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:40:36,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:40:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:40:36,241 INFO L87 Difference]: Start difference. First operand 2405 states and 7391 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) [2021-08-21 11:40:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:36,353 INFO L93 Difference]: Finished difference Result 2882 states and 8749 transitions. [2021-08-21 11:40:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 11:40:36,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 55 [2021-08-21 11:40:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:36,360 INFO L225 Difference]: With dead ends: 2882 [2021-08-21 11:40:36,360 INFO L226 Difference]: Without dead ends: 2186 [2021-08-21 11:40:36,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:40:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-08-21 11:40:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-08-21 11:40:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 3.0187643020594965) internal successors, (6596), 2185 states have internal predecessors, (6596), 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) [2021-08-21 11:40:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6596 transitions. [2021-08-21 11:40:36,405 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6596 transitions. Word has length 55 [2021-08-21 11:40:36,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:36,406 INFO L470 AbstractCegarLoop]: Abstraction has 2186 states and 6596 transitions. [2021-08-21 11:40:36,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) [2021-08-21 11:40:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6596 transitions. [2021-08-21 11:40:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 11:40:36,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:36,410 INFO L512 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, 1, 1, 1, 1, 1, 1] [2021-08-21 11:40:36,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:40:36,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash -628186020, now seen corresponding path program 1 times [2021-08-21 11:40:36,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:36,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162556747] [2021-08-21 11:40:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:36,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:36,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:36,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162556747] [2021-08-21 11:40:36,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162556747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:36,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:36,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:40:36,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323387920] [2021-08-21 11:40:36,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:40:36,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:40:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:40:36,483 INFO L87 Difference]: Start difference. First operand 2186 states and 6596 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-08-21 11:40:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:36,585 INFO L93 Difference]: Finished difference Result 2123 states and 6230 transitions. [2021-08-21 11:40:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:40:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-08-21 11:40:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:36,590 INFO L225 Difference]: With dead ends: 2123 [2021-08-21 11:40:36,590 INFO L226 Difference]: Without dead ends: 1571 [2021-08-21 11:40:36,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:40:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-08-21 11:40:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2021-08-21 11:40:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 2.875796178343949) internal successors, (4515), 1570 states have internal predecessors, (4515), 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) [2021-08-21 11:40:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 4515 transitions. [2021-08-21 11:40:36,619 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 4515 transitions. Word has length 56 [2021-08-21 11:40:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:36,620 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 4515 transitions. [2021-08-21 11:40:36,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-08-21 11:40:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 4515 transitions. [2021-08-21 11:40:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 11:40:36,623 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:36,623 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:40:36,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 11:40:36,623 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:36,623 INFO L82 PathProgramCache]: Analyzing trace with hash -387576593, now seen corresponding path program 1 times [2021-08-21 11:40:36,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:36,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420300479] [2021-08-21 11:40:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:36,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:36,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:36,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420300479] [2021-08-21 11:40:36,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420300479] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:36,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:36,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:40:36,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776808363] [2021-08-21 11:40:36,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:40:36,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:40:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:40:36,688 INFO L87 Difference]: Start difference. First operand 1571 states and 4515 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2021-08-21 11:40:36,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:36,741 INFO L93 Difference]: Finished difference Result 2356 states and 6742 transitions. [2021-08-21 11:40:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 11:40:36,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 58 [2021-08-21 11:40:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:36,745 INFO L225 Difference]: With dead ends: 2356 [2021-08-21 11:40:36,745 INFO L226 Difference]: Without dead ends: 1668 [2021-08-21 11:40:36,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-21 11:40:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-08-21 11:40:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1506. [2021-08-21 11:40:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 2.823920265780731) internal successors, (4250), 1505 states have internal predecessors, (4250), 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) [2021-08-21 11:40:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 4250 transitions. [2021-08-21 11:40:36,769 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 4250 transitions. Word has length 58 [2021-08-21 11:40:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:36,769 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 4250 transitions. [2021-08-21 11:40:36,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2021-08-21 11:40:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 4250 transitions. [2021-08-21 11:40:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 11:40:36,772 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:40:36,772 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:40:36,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:40:36,772 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:40:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:40:36,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1328953179, now seen corresponding path program 2 times [2021-08-21 11:40:36,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:40:36,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062651799] [2021-08-21 11:40:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:40:36,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:40:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:40:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:40:36,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:40:36,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062651799] [2021-08-21 11:40:36,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062651799] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:40:36,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:40:36,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:40:36,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245626615] [2021-08-21 11:40:36,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:40:36,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:40:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:40:36,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:40:36,840 INFO L87 Difference]: Start difference. First operand 1506 states and 4250 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-08-21 11:40:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:40:36,902 INFO L93 Difference]: Finished difference Result 1074 states and 2927 transitions. [2021-08-21 11:40:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 11:40:36,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2021-08-21 11:40:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:40:36,902 INFO L225 Difference]: With dead ends: 1074 [2021-08-21 11:40:36,902 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 11:40:36,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:40:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 11:40:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 11:40:36,903 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) [2021-08-21 11:40:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 11:40:36,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-08-21 11:40:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:40:36,903 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 11:40:36,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-08-21 11:40:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 11:40:36,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 11:40:36,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:40:36,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:40:36,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:40:36,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 11:40:36,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 11:40:36,908 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:40:36,908 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:40:36,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:40:36 BasicIcfg [2021-08-21 11:40:36,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:40:36,911 INFO L168 Benchmark]: Toolchain (without parser) took 4380.64 ms. Allocated memory was 241.2 MB in the beginning and 487.6 MB in the end (delta: 246.4 MB). Free memory was 204.1 MB in the beginning and 221.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 230.6 MB. Max. memory is 8.0 GB. [2021-08-21 11:40:36,911 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 241.2 MB. Free memory is still 222.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:40:36,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.76 ms. Allocated memory is still 241.2 MB. Free memory was 204.0 MB in the beginning and 213.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-08-21 11:40:36,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.45 ms. Allocated memory is still 241.2 MB. Free memory was 213.7 MB in the beginning and 211.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:40:36,912 INFO L168 Benchmark]: Boogie Preprocessor took 14.19 ms. Allocated memory is still 241.2 MB. Free memory was 211.6 MB in the beginning and 210.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:40:36,912 INFO L168 Benchmark]: RCFGBuilder took 424.79 ms. Allocated memory is still 241.2 MB. Free memory was 210.3 MB in the beginning and 187.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:40:36,912 INFO L168 Benchmark]: TraceAbstraction took 3516.12 ms. Allocated memory was 241.2 MB in the beginning and 487.6 MB in the end (delta: 246.4 MB). Free memory was 186.5 MB in the beginning and 221.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 211.7 MB. Max. memory is 8.0 GB. [2021-08-21 11:40:36,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 241.2 MB. Free memory is still 222.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.76 ms. Allocated memory is still 241.2 MB. Free memory was 204.0 MB in the beginning and 213.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.45 ms. Allocated memory is still 241.2 MB. Free memory was 213.7 MB in the beginning and 211.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.19 ms. Allocated memory is still 241.2 MB. Free memory was 211.6 MB in the beginning and 210.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.79 ms. Allocated memory is still 241.2 MB. Free memory was 210.3 MB in the beginning and 187.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3516.12 ms. Allocated memory was 241.2 MB in the beginning and 487.6 MB in the end (delta: 246.4 MB). Free memory was 186.5 MB in the beginning and 221.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 211.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3418.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 83.6ms, AutomataDifference: 1463.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 153.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 833 SDtfs, 1263 SDslu, 2644 SDs, 0 SdLazy, 279 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 296.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 896.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 542.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 2234 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.4ms SsaConstructionTime, 132.4ms SatisfiabilityAnalysisTime, 830.5ms InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 1326 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! [2021-08-21 11:40:36,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...