/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/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:30:40,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:30:40,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:30:40,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:30:40,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:30:40,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:30:40,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:30:40,362 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 17:30:40,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:30:40,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:30:40,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:30:40,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:30:40,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:30:40,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:30:40,384 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:30:40,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:30:40,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:30:40,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:30:40,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:30:40,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:30:40,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:30:40,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:30:40,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:30:40,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:30:40,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:30:40,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:30:40,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:30:40,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:30:40,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:30:40,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:30:40,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:30:40,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:30:40,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:30:40,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:30:40,664 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:30:40,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-10 17:30:40,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763a4ca28/d7522a67b46043fea1e0959f57f91e16/FLAGea7df4c5a [2021-03-10 17:30:41,240 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:30:41,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-10 17:30:41,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763a4ca28/d7522a67b46043fea1e0959f57f91e16/FLAGea7df4c5a [2021-03-10 17:30:41,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763a4ca28/d7522a67b46043fea1e0959f57f91e16 [2021-03-10 17:30:41,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:30:41,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:30:41,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:41,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:30:41,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:30:41,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd1d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41, skipping insertion in model container [2021-03-10 17:30:41,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:30:41,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:30:41,646 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/safe015_tso.oepc.i[950,963] [2021-03-10 17:30:41,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:41,763 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:30:41,773 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/safe015_tso.oepc.i[950,963] [2021-03-10 17:30:41,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:41,858 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:30:41,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41 WrapperNode [2021-03-10 17:30:41,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:41,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:41,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:30:41,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:30:41,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:41,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:30:41,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:30:41,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:30:41,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (1/1) ... [2021-03-10 17:30:41,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:30:41,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:30:41,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:30:41,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:30:41,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (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 17:30:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:30:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:30:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:30:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:30:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:30:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:30:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:30:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:30:41,979 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 17:30:42,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:30:42,245 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:30:42,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:42 BoogieIcfgContainer [2021-03-10 17:30:42,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:30:42,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:30:42,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:30:42,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:30:42,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:30:41" (1/3) ... [2021-03-10 17:30:42,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebcc41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:42, skipping insertion in model container [2021-03-10 17:30:42,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:41" (2/3) ... [2021-03-10 17:30:42,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebcc41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:42, skipping insertion in model container [2021-03-10 17:30:42,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:42" (3/3) ... [2021-03-10 17:30:42,255 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-03-10 17:30:42,259 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:30:42,259 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:30:42,262 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:30:42,263 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:30:42,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,294 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,306 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,311 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:42,314 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:30:42,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:30:42,349 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:30:42,349 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:30:42,349 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:30:42,349 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:30:42,349 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:30:42,349 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:30:42,349 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:30:42,349 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:30:42,359 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-03-10 17:30:42,761 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 17:30:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 17:30:42,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:30:42,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:42,834 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] [2021-03-10 17:30:42,835 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:42,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1730311568, now seen corresponding path program 1 times [2021-03-10 17:30:42,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:42,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854952012] [2021-03-10 17:30:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:43,195 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 17:30:43,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854952012] [2021-03-10 17:30:43,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:43,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:43,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046295444] [2021-03-10 17:30:43,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:43,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:43,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:43,249 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 17:30:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:43,697 INFO L93 Difference]: Finished difference Result 18207 states and 62572 transitions. [2021-03-10 17:30:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-03-10 17:30:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:43,741 INFO L225 Difference]: With dead ends: 18207 [2021-03-10 17:30:43,742 INFO L226 Difference]: Without dead ends: 5705 [2021-03-10 17:30:43,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 223.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2021-03-10 17:30:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 4697. [2021-03-10 17:30:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 4696 states have (on average 3.323253833049404) internal successors, (15606), 4696 states have internal predecessors, (15606), 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 17:30:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 15606 transitions. [2021-03-10 17:30:44,001 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 15606 transitions. Word has length 39 [2021-03-10 17:30:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:44,002 INFO L480 AbstractCegarLoop]: Abstraction has 4697 states and 15606 transitions. [2021-03-10 17:30:44,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 17:30:44,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 15606 transitions. [2021-03-10 17:30:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:30:44,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:44,010 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] [2021-03-10 17:30:44,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:30:44,011 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash -792096707, now seen corresponding path program 1 times [2021-03-10 17:30:44,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:44,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577656562] [2021-03-10 17:30:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:44,150 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 17:30:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577656562] [2021-03-10 17:30:44,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:44,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:44,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819667368] [2021-03-10 17:30:44,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:44,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:44,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:44,153 INFO L87 Difference]: Start difference. First operand 4697 states and 15606 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 17:30:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:44,414 INFO L93 Difference]: Finished difference Result 6553 states and 21509 transitions. [2021-03-10 17:30:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-03-10 17:30:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:44,440 INFO L225 Difference]: With dead ends: 6553 [2021-03-10 17:30:44,440 INFO L226 Difference]: Without dead ends: 5229 [2021-03-10 17:30:44,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 200.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2021-03-10 17:30:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 3995. [2021-03-10 17:30:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3994 states have (on average 3.303955933900851) internal successors, (13196), 3994 states have internal predecessors, (13196), 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 17:30:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 13196 transitions. [2021-03-10 17:30:44,577 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 13196 transitions. Word has length 42 [2021-03-10 17:30:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:44,577 INFO L480 AbstractCegarLoop]: Abstraction has 3995 states and 13196 transitions. [2021-03-10 17:30:44,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 17:30:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 13196 transitions. [2021-03-10 17:30:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:30:44,587 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:44,587 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] [2021-03-10 17:30:44,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:30:44,587 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:44,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1441768206, now seen corresponding path program 1 times [2021-03-10 17:30:44,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:44,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717839858] [2021-03-10 17:30:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:44,705 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 17:30:44,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717839858] [2021-03-10 17:30:44,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:44,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:44,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449928912] [2021-03-10 17:30:44,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:44,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:44,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:44,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:44,707 INFO L87 Difference]: Start difference. First operand 3995 states and 13196 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 17:30:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:44,888 INFO L93 Difference]: Finished difference Result 6165 states and 20088 transitions. [2021-03-10 17:30:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:44,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-03-10 17:30:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:44,918 INFO L225 Difference]: With dead ends: 6165 [2021-03-10 17:30:44,918 INFO L226 Difference]: Without dead ends: 4953 [2021-03-10 17:30:44,918 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2021-03-10 17:30:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 3708. [2021-03-10 17:30:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3707 states have (on average 3.2827083895333153) internal successors, (12169), 3707 states have internal predecessors, (12169), 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 17:30:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 12169 transitions. [2021-03-10 17:30:45,041 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 12169 transitions. Word has length 43 [2021-03-10 17:30:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:45,041 INFO L480 AbstractCegarLoop]: Abstraction has 3708 states and 12169 transitions. [2021-03-10 17:30:45,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 17:30:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 12169 transitions. [2021-03-10 17:30:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:30:45,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:45,048 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] [2021-03-10 17:30:45,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:30:45,048 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:45,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2114944062, now seen corresponding path program 1 times [2021-03-10 17:30:45,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:45,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867396387] [2021-03-10 17:30:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:45,123 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 17:30:45,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867396387] [2021-03-10 17:30:45,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:45,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:30:45,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904932385] [2021-03-10 17:30:45,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:30:45,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:30:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:30:45,124 INFO L87 Difference]: Start difference. First operand 3708 states and 12169 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 17:30:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:45,211 INFO L93 Difference]: Finished difference Result 4220 states and 13765 transitions. [2021-03-10 17:30:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:45,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2021-03-10 17:30:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:45,223 INFO L225 Difference]: With dead ends: 4220 [2021-03-10 17:30:45,223 INFO L226 Difference]: Without dead ends: 3660 [2021-03-10 17:30:45,223 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2021-03-10 17:30:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3660. [2021-03-10 17:30:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.2765783000819897) internal successors, (11989), 3659 states have internal predecessors, (11989), 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 17:30:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 11989 transitions. [2021-03-10 17:30:45,356 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 11989 transitions. Word has length 44 [2021-03-10 17:30:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:45,356 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 11989 transitions. [2021-03-10 17:30:45,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 17:30:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 11989 transitions. [2021-03-10 17:30:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:30:45,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:45,363 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 17:30:45,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:30:45,363 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1006789228, now seen corresponding path program 1 times [2021-03-10 17:30:45,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:45,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311754879] [2021-03-10 17:30:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:45,461 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 17:30:45,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311754879] [2021-03-10 17:30:45,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:45,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:45,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012667221] [2021-03-10 17:30:45,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:45,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:45,467 INFO L87 Difference]: Start difference. First operand 3660 states and 11989 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 17:30:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:45,573 INFO L93 Difference]: Finished difference Result 6613 states and 21449 transitions. [2021-03-10 17:30:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 17:30:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:45,585 INFO L225 Difference]: With dead ends: 6613 [2021-03-10 17:30:45,586 INFO L226 Difference]: Without dead ends: 4636 [2021-03-10 17:30:45,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:30:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-03-10 17:30:45,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 3660. [2021-03-10 17:30:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.263186663022684) internal successors, (11940), 3659 states have internal predecessors, (11940), 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 17:30:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 11940 transitions. [2021-03-10 17:30:45,685 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 11940 transitions. Word has length 45 [2021-03-10 17:30:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:45,687 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 11940 transitions. [2021-03-10 17:30:45,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 17:30:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 11940 transitions. [2021-03-10 17:30:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:30:45,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:45,694 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 17:30:45,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:30:45,694 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash -357807042, now seen corresponding path program 2 times [2021-03-10 17:30:45,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:45,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844847829] [2021-03-10 17:30:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:45,852 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 17:30:45,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844847829] [2021-03-10 17:30:45,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:45,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:45,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650533046] [2021-03-10 17:30:45,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:45,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:45,854 INFO L87 Difference]: Start difference. First operand 3660 states and 11940 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 17:30:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:45,934 INFO L93 Difference]: Finished difference Result 4720 states and 15159 transitions. [2021-03-10 17:30:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:30:45,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 17:30:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:45,941 INFO L225 Difference]: With dead ends: 4720 [2021-03-10 17:30:45,941 INFO L226 Difference]: Without dead ends: 2253 [2021-03-10 17:30:45,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:30:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2021-03-10 17:30:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2061. [2021-03-10 17:30:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2060 states have (on average 3.096601941747573) internal successors, (6379), 2060 states have internal predecessors, (6379), 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 17:30:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 6379 transitions. [2021-03-10 17:30:45,989 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 6379 transitions. Word has length 45 [2021-03-10 17:30:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:45,989 INFO L480 AbstractCegarLoop]: Abstraction has 2061 states and 6379 transitions. [2021-03-10 17:30:45,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 17:30:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 6379 transitions. [2021-03-10 17:30:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:30:45,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:45,993 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] [2021-03-10 17:30:45,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:30:45,993 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1279949411, now seen corresponding path program 1 times [2021-03-10 17:30:45,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:45,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379902387] [2021-03-10 17:30:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:46,066 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 17:30:46,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379902387] [2021-03-10 17:30:46,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:46,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:30:46,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150826255] [2021-03-10 17:30:46,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:30:46,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:46,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:30:46,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:30:46,068 INFO L87 Difference]: Start difference. First operand 2061 states and 6379 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 17:30:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:46,145 INFO L93 Difference]: Finished difference Result 2538 states and 7737 transitions. [2021-03-10 17:30:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:46,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-03-10 17:30:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:46,149 INFO L225 Difference]: With dead ends: 2538 [2021-03-10 17:30:46,149 INFO L226 Difference]: Without dead ends: 1842 [2021-03-10 17:30:46,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2021-03-10 17:30:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1842. [2021-03-10 17:30:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 3.033134166214014) internal successors, (5584), 1841 states have internal predecessors, (5584), 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 17:30:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 5584 transitions. [2021-03-10 17:30:46,181 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 5584 transitions. Word has length 46 [2021-03-10 17:30:46,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:46,181 INFO L480 AbstractCegarLoop]: Abstraction has 1842 states and 5584 transitions. [2021-03-10 17:30:46,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 17:30:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 5584 transitions. [2021-03-10 17:30:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:30:46,184 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:46,184 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 17:30:46,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:30:46,184 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1991887540, now seen corresponding path program 1 times [2021-03-10 17:30:46,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:46,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729799539] [2021-03-10 17:30:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:46,254 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 17:30:46,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729799539] [2021-03-10 17:30:46,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:46,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:46,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054106005] [2021-03-10 17:30:46,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:46,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:46,256 INFO L87 Difference]: Start difference. First operand 1842 states and 5584 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 17:30:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:46,354 INFO L93 Difference]: Finished difference Result 1779 states and 5218 transitions. [2021-03-10 17:30:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:30:46,355 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 17:30:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:46,359 INFO L225 Difference]: With dead ends: 1779 [2021-03-10 17:30:46,359 INFO L226 Difference]: Without dead ends: 1231 [2021-03-10 17:30:46,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:30:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-03-10 17:30:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-03-10 17:30:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 2.8601626016260164) internal successors, (3518), 1230 states have internal predecessors, (3518), 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 17:30:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 3518 transitions. [2021-03-10 17:30:46,383 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 3518 transitions. Word has length 47 [2021-03-10 17:30:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:46,384 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 3518 transitions. [2021-03-10 17:30:46,384 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 17:30:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 3518 transitions. [2021-03-10 17:30:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:30:46,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:46,386 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 17:30:46,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:30:46,387 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:46,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:46,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1686260499, now seen corresponding path program 1 times [2021-03-10 17:30:46,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:46,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919194234] [2021-03-10 17:30:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:46,473 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 17:30:46,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919194234] [2021-03-10 17:30:46,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:46,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:46,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362068675] [2021-03-10 17:30:46,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:46,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:46,475 INFO L87 Difference]: Start difference. First operand 1231 states and 3518 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 17:30:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:46,535 INFO L93 Difference]: Finished difference Result 799 states and 2195 transitions. [2021-03-10 17:30:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:30:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 17:30:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:46,535 INFO L225 Difference]: With dead ends: 799 [2021-03-10 17:30:46,535 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:30:46,535 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:30:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:30:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:30:46,536 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 17:30:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:30:46,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-03-10 17:30:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:46,536 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:30:46,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 17:30:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:30:46,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:30:46,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:30:46,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:30:46 BasicIcfg [2021-03-10 17:30:46,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:30:46,540 INFO L168 Benchmark]: Toolchain (without parser) took 5044.53 ms. Allocated memory was 358.6 MB in the beginning and 828.4 MB in the end (delta: 469.8 MB). Free memory was 321.5 MB in the beginning and 658.8 MB in the end (delta: -337.3 MB). Peak memory consumption was 133.5 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:46,540 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 358.6 MB. Free memory was 339.6 MB in the beginning and 339.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:30:46,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.38 ms. Allocated memory is still 358.6 MB. Free memory was 320.8 MB in the beginning and 320.8 MB in the end (delta: -29.4 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:46,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 358.6 MB. Free memory was 319.8 MB in the beginning and 318.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:30:46,545 INFO L168 Benchmark]: Boogie Preprocessor took 25.10 ms. Allocated memory is still 358.6 MB. Free memory was 318.7 MB in the beginning and 316.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:46,545 INFO L168 Benchmark]: RCFGBuilder took 326.57 ms. Allocated memory is still 358.6 MB. Free memory was 316.6 MB in the beginning and 292.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:46,545 INFO L168 Benchmark]: TraceAbstraction took 4289.13 ms. Allocated memory was 358.6 MB in the beginning and 828.4 MB in the end (delta: 469.8 MB). Free memory was 292.5 MB in the beginning and 658.8 MB in the end (delta: -366.3 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:46,551 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 358.6 MB. Free memory was 339.6 MB in the beginning and 339.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 357.38 ms. Allocated memory is still 358.6 MB. Free memory was 320.8 MB in the beginning and 320.8 MB in the end (delta: -29.4 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 358.6 MB. Free memory was 319.8 MB in the beginning and 318.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.10 ms. Allocated memory is still 358.6 MB. Free memory was 318.7 MB in the beginning and 316.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 326.57 ms. Allocated memory is still 358.6 MB. Free memory was 316.6 MB in the beginning and 292.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4289.13 ms. Allocated memory was 358.6 MB in the beginning and 828.4 MB in the end (delta: 469.8 MB). Free memory was 292.5 MB in the beginning and 658.8 MB in the end (delta: -366.3 MB). Peak memory consumption was 105.5 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4189.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 115.0ms, AutomataDifference: 1598.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 412.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 902 SDtfs, 1484 SDslu, 3208 SDs, 0 SdLazy, 456 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 292.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1010.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 838.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 4655 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.2ms SsaConstructionTime, 198.2ms SatisfiabilityAnalysisTime, 836.7ms InterpolantComputationTime, 400 NumberOfCodeBlocks, 400 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 391 ConstructedInterpolants, 0 QuantifiedInterpolants, 1833 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...