/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:32:46,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:32:46,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:32:46,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:32:46,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:32:46,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:32:46,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:32:46,825 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 17:32:46,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:32:46,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:32:46,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:32:46,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:32:46,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:32:46,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:32:46,848 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:32:46,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:32:46,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:32:46,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:32:46,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:32:46,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:32:46,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:32:46,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:32:46,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:32:46,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:32:46,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:32:46,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:32:46,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:32:46,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:32:46,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:32:46,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:32:46,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:32:46,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:32:46,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:32:46,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:32:46,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:32:46,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:32:46,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:32:46,853 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:32:46,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:32:46,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:32:47,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:32:47,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:32:47,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:32:47,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:32:47,171 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:32:47,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-03-10 17:32:47,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a778801a/d1b8ae9df95643ed979f4b77686dac63/FLAG03040ad7c [2021-03-10 17:32:47,661 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:32:47,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-03-10 17:32:47,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a778801a/d1b8ae9df95643ed979f4b77686dac63/FLAG03040ad7c [2021-03-10 17:32:47,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a778801a/d1b8ae9df95643ed979f4b77686dac63 [2021-03-10 17:32:47,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:32:47,984 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:32:47,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:32:47,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:32:47,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:32:47,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:32:47" (1/1) ... [2021-03-10 17:32:47,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc163f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:47, skipping insertion in model container [2021-03-10 17:32:47,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:32:47" (1/1) ... [2021-03-10 17:32:47,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:32:48,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:32:48,145 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/safe020_tso.opt.i[949,962] [2021-03-10 17:32:48,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:32:48,267 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:32:48,316 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/safe020_tso.opt.i[949,962] [2021-03-10 17:32:48,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:32:48,440 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:32:48,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48 WrapperNode [2021-03-10 17:32:48,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:32:48,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:32:48,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:32:48,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:32:48,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:32:48,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:32:48,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:32:48,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:32:48,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (1/1) ... [2021-03-10 17:32:48,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:32:48,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:32:48,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:32:48,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:32:48,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (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 17:32:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:32:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:32:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:32:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:32:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:32:48,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:32:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:32:48,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:32:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:32:48,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:32:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:32:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:32:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:32:48,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:32:48,617 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 17:32:48,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:32:48,988 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:32:48,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:32:48 BoogieIcfgContainer [2021-03-10 17:32:48,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:32:48,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:32:48,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:32:48,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:32:48,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:32:47" (1/3) ... [2021-03-10 17:32:48,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fb61ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:32:48, skipping insertion in model container [2021-03-10 17:32:48,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:32:48" (2/3) ... [2021-03-10 17:32:48,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fb61ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:32:48, skipping insertion in model container [2021-03-10 17:32:48,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:32:48" (3/3) ... [2021-03-10 17:32:48,995 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2021-03-10 17:32:49,000 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:32:49,000 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:32:49,004 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:32:49,004 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:32:49,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,025 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,025 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,039 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,039 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:32:49,040 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:32:49,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:32:49,070 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:32:49,070 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:32:49,070 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:32:49,070 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:32:49,071 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:32:49,071 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:32:49,071 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:32:49,071 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:32:49,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 73 transitions, 161 flow [2021-03-10 17:32:49,464 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7565 states, 7563 states have (on average 3.555731852439508) internal successors, (26892), 7564 states have internal predecessors, (26892), 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 17:32:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 7565 states, 7563 states have (on average 3.555731852439508) internal successors, (26892), 7564 states have internal predecessors, (26892), 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 17:32:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:32:49,536 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:49,537 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 17:32:49,537 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:49,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:49,542 INFO L82 PathProgramCache]: Analyzing trace with hash 593098047, now seen corresponding path program 1 times [2021-03-10 17:32:49,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:49,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775136995] [2021-03-10 17:32:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:49,997 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 17:32:49,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775136995] [2021-03-10 17:32:49,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:49,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:32:49,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164757698] [2021-03-10 17:32:50,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:32:50,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:50,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:32:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:32:50,035 INFO L87 Difference]: Start difference. First operand has 7565 states, 7563 states have (on average 3.555731852439508) internal successors, (26892), 7564 states have internal predecessors, (26892), 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 17:32:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:50,537 INFO L93 Difference]: Finished difference Result 14603 states and 49881 transitions. [2021-03-10 17:32:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:32:50,539 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 17:32:50,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:50,588 INFO L225 Difference]: With dead ends: 14603 [2021-03-10 17:32:50,588 INFO L226 Difference]: Without dead ends: 4421 [2021-03-10 17:32:50,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 281.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:32:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2021-03-10 17:32:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3701. [2021-03-10 17:32:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3700 states have (on average 3.3216216216216217) internal successors, (12290), 3700 states have internal predecessors, (12290), 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 17:32:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 12290 transitions. [2021-03-10 17:32:50,854 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 12290 transitions. Word has length 39 [2021-03-10 17:32:50,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:50,856 INFO L480 AbstractCegarLoop]: Abstraction has 3701 states and 12290 transitions. [2021-03-10 17:32:50,857 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 17:32:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 12290 transitions. [2021-03-10 17:32:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:32:50,867 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:50,868 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] [2021-03-10 17:32:50,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:32:50,874 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1823047648, now seen corresponding path program 1 times [2021-03-10 17:32:50,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:50,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517836255] [2021-03-10 17:32:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:51,002 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 17:32:51,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517836255] [2021-03-10 17:32:51,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:51,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:32:51,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408072703] [2021-03-10 17:32:51,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:32:51,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:51,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:32:51,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:32:51,005 INFO L87 Difference]: Start difference. First operand 3701 states and 12290 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 17:32:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:51,392 INFO L93 Difference]: Finished difference Result 6007 states and 19607 transitions. [2021-03-10 17:32:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:32:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-03-10 17:32:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:51,417 INFO L225 Difference]: With dead ends: 6007 [2021-03-10 17:32:51,418 INFO L226 Difference]: Without dead ends: 4399 [2021-03-10 17:32:51,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 305.4ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:32:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2021-03-10 17:32:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 3679. [2021-03-10 17:32:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 3678 states have (on average 3.3036976617727025) internal successors, (12151), 3678 states have internal predecessors, (12151), 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 17:32:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 12151 transitions. [2021-03-10 17:32:51,554 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 12151 transitions. Word has length 41 [2021-03-10 17:32:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:51,555 INFO L480 AbstractCegarLoop]: Abstraction has 3679 states and 12151 transitions. [2021-03-10 17:32:51,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 17:32:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 12151 transitions. [2021-03-10 17:32:51,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:32:51,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:51,564 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 17:32:51,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:32:51,565 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:51,565 INFO L82 PathProgramCache]: Analyzing trace with hash 404053953, now seen corresponding path program 1 times [2021-03-10 17:32:51,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:51,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255126878] [2021-03-10 17:32:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:51,767 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 17:32:51,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255126878] [2021-03-10 17:32:51,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:51,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:32:51,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621694120] [2021-03-10 17:32:51,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:32:51,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:51,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:32:51,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:32:51,769 INFO L87 Difference]: Start difference. First operand 3679 states and 12151 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 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 17:32:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:51,967 INFO L93 Difference]: Finished difference Result 5495 states and 17896 transitions. [2021-03-10 17:32:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:32:51,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 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 17:32:51,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:51,985 INFO L225 Difference]: With dead ends: 5495 [2021-03-10 17:32:51,986 INFO L226 Difference]: Without dead ends: 3215 [2021-03-10 17:32:51,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:32:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-03-10 17:32:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2735. [2021-03-10 17:32:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2734 states have (on average 3.2201901975128018) internal successors, (8804), 2734 states have internal predecessors, (8804), 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 17:32:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 8804 transitions. [2021-03-10 17:32:52,073 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 8804 transitions. Word has length 43 [2021-03-10 17:32:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:52,073 INFO L480 AbstractCegarLoop]: Abstraction has 2735 states and 8804 transitions. [2021-03-10 17:32:52,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 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 17:32:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 8804 transitions. [2021-03-10 17:32:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:32:52,079 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:52,079 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 17:32:52,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:32:52,079 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1039028121, now seen corresponding path program 1 times [2021-03-10 17:32:52,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:52,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771067648] [2021-03-10 17:32:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:52,190 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 17:32:52,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771067648] [2021-03-10 17:32:52,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:52,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:32:52,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300303719] [2021-03-10 17:32:52,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:32:52,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:32:52,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:32:52,193 INFO L87 Difference]: Start difference. First operand 2735 states and 8804 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 17:32:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:52,401 INFO L93 Difference]: Finished difference Result 3855 states and 12240 transitions. [2021-03-10 17:32:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:32:52,401 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 17:32:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:52,431 INFO L225 Difference]: With dead ends: 3855 [2021-03-10 17:32:52,432 INFO L226 Difference]: Without dead ends: 2975 [2021-03-10 17:32:52,432 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:32:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-03-10 17:32:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2495. [2021-03-10 17:32:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2494 states have (on average 3.2012830793905374) internal successors, (7984), 2494 states have internal predecessors, (7984), 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 17:32:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 7984 transitions. [2021-03-10 17:32:52,502 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 7984 transitions. Word has length 43 [2021-03-10 17:32:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:52,502 INFO L480 AbstractCegarLoop]: Abstraction has 2495 states and 7984 transitions. [2021-03-10 17:32:52,502 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 17:32:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 7984 transitions. [2021-03-10 17:32:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:32:52,508 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:52,508 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 17:32:52,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:32:52,508 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1529487878, now seen corresponding path program 1 times [2021-03-10 17:32:52,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:52,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585952722] [2021-03-10 17:32:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:52,621 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 17:32:52,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585952722] [2021-03-10 17:32:52,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:52,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:32:52,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53794864] [2021-03-10 17:32:52,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:32:52,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:32:52,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:32:52,626 INFO L87 Difference]: Start difference. First operand 2495 states and 7984 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 17:32:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:52,737 INFO L93 Difference]: Finished difference Result 3266 states and 10318 transitions. [2021-03-10 17:32:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:32:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 17:32:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:52,746 INFO L225 Difference]: With dead ends: 3266 [2021-03-10 17:32:52,746 INFO L226 Difference]: Without dead ends: 2306 [2021-03-10 17:32:52,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:32:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-03-10 17:32:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2021-03-10 17:32:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 3.1553145336225596) internal successors, (7273), 2305 states have internal predecessors, (7273), 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 17:32:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 7273 transitions. [2021-03-10 17:32:52,806 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 7273 transitions. Word has length 45 [2021-03-10 17:32:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:52,808 INFO L480 AbstractCegarLoop]: Abstraction has 2306 states and 7273 transitions. [2021-03-10 17:32:52,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 17:32:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 7273 transitions. [2021-03-10 17:32:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:32:52,815 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:52,815 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 17:32:52,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:32:52,815 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash -580524162, now seen corresponding path program 1 times [2021-03-10 17:32:52,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:52,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582541781] [2021-03-10 17:32:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:52,940 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 17:32:52,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582541781] [2021-03-10 17:32:52,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:52,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:32:52,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52578334] [2021-03-10 17:32:52,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:32:52,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:52,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:32:52,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:32:52,944 INFO L87 Difference]: Start difference. First operand 2306 states and 7273 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 17:32:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:53,071 INFO L93 Difference]: Finished difference Result 2540 states and 7798 transitions. [2021-03-10 17:32:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:32:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 17:32:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:53,077 INFO L225 Difference]: With dead ends: 2540 [2021-03-10 17:32:53,077 INFO L226 Difference]: Without dead ends: 1712 [2021-03-10 17:32:53,078 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:32:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2021-03-10 17:32:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1712. [2021-03-10 17:32:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1711 states have (on average 3.0128579777907656) internal successors, (5155), 1711 states have internal predecessors, (5155), 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 17:32:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 5155 transitions. [2021-03-10 17:32:53,122 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 5155 transitions. Word has length 46 [2021-03-10 17:32:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:53,122 INFO L480 AbstractCegarLoop]: Abstraction has 1712 states and 5155 transitions. [2021-03-10 17:32:53,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 17:32:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 5155 transitions. [2021-03-10 17:32:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:32:53,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:53,126 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:32:53,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:32:53,126 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash -855155265, now seen corresponding path program 1 times [2021-03-10 17:32:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:53,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019889548] [2021-03-10 17:32:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:53,239 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 17:32:53,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019889548] [2021-03-10 17:32:53,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:53,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:32:53,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570936942] [2021-03-10 17:32:53,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:32:53,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:53,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:32:53,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:32:53,240 INFO L87 Difference]: Start difference. First operand 1712 states and 5155 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:32:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:53,396 INFO L93 Difference]: Finished difference Result 1460 states and 4261 transitions. [2021-03-10 17:32:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:32:53,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:32:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:53,400 INFO L225 Difference]: With dead ends: 1460 [2021-03-10 17:32:53,400 INFO L226 Difference]: Without dead ends: 752 [2021-03-10 17:32:53,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:32:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-03-10 17:32:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 720. [2021-03-10 17:32:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 2.8150208623087623) internal successors, (2024), 719 states have internal predecessors, (2024), 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 17:32:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2024 transitions. [2021-03-10 17:32:53,415 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2024 transitions. Word has length 48 [2021-03-10 17:32:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:53,415 INFO L480 AbstractCegarLoop]: Abstraction has 720 states and 2024 transitions. [2021-03-10 17:32:53,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:32:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2024 transitions. [2021-03-10 17:32:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:32:53,416 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:53,416 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:32:53,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:32:53,418 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:53,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1211584796, now seen corresponding path program 1 times [2021-03-10 17:32:53,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:53,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859054271] [2021-03-10 17:32:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:53,518 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 17:32:53,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859054271] [2021-03-10 17:32:53,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:53,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:32:53,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553223788] [2021-03-10 17:32:53,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:32:53,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:53,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:32:53,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:32:53,521 INFO L87 Difference]: Start difference. First operand 720 states and 2024 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) [2021-03-10 17:32:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:53,581 INFO L93 Difference]: Finished difference Result 1123 states and 3201 transitions. [2021-03-10 17:32:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:32:53,582 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 [2021-03-10 17:32:53,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:53,584 INFO L225 Difference]: With dead ends: 1123 [2021-03-10 17:32:53,584 INFO L226 Difference]: Without dead ends: 660 [2021-03-10 17:32:53,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 17:32:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-03-10 17:32:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2021-03-10 17:32:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 2.8012139605462822) internal successors, (1846), 659 states have internal predecessors, (1846), 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 17:32:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1846 transitions. [2021-03-10 17:32:53,598 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1846 transitions. Word has length 50 [2021-03-10 17:32:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:53,598 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 1846 transitions. [2021-03-10 17:32:53,598 INFO L481 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) [2021-03-10 17:32:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1846 transitions. [2021-03-10 17:32:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:32:53,599 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:32:53,599 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:32:53,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:32:53,600 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:32:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:32:53,600 INFO L82 PathProgramCache]: Analyzing trace with hash 724445718, now seen corresponding path program 2 times [2021-03-10 17:32:53,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:32:53,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982541173] [2021-03-10 17:32:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:32:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:32:53,692 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 17:32:53,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982541173] [2021-03-10 17:32:53,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:32:53,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:32:53,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763020607] [2021-03-10 17:32:53,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:32:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:32:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:32:53,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:32:53,695 INFO L87 Difference]: Start difference. First operand 660 states and 1846 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) [2021-03-10 17:32:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:32:53,758 INFO L93 Difference]: Finished difference Result 606 states and 1684 transitions. [2021-03-10 17:32:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:32:53,758 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 [2021-03-10 17:32:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:32:53,759 INFO L225 Difference]: With dead ends: 606 [2021-03-10 17:32:53,759 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:32:53,759 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:32:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:32:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:32:53,759 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 17:32:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:32:53,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-03-10 17:32:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:32:53,760 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:32:53,760 INFO L481 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) [2021-03-10 17:32:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:32:53,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:32:53,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:32:53,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:32:53 BasicIcfg [2021-03-10 17:32:53,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:32:53,765 INFO L168 Benchmark]: Toolchain (without parser) took 5784.00 ms. Allocated memory was 255.9 MB in the beginning and 897.6 MB in the end (delta: 641.7 MB). Free memory was 233.8 MB in the beginning and 492.3 MB in the end (delta: -258.5 MB). Peak memory consumption was 383.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:32:53,766 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:32:53,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.35 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.2 MB in the beginning and 331.8 MB in the end (delta: -98.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:32:53,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.43 ms. Allocated memory is still 367.0 MB. Free memory was 331.8 MB in the beginning and 330.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:32:53,768 INFO L168 Benchmark]: Boogie Preprocessor took 36.74 ms. Allocated memory is still 367.0 MB. Free memory was 330.1 MB in the beginning and 328.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:32:53,768 INFO L168 Benchmark]: RCFGBuilder took 454.86 ms. Allocated memory is still 367.0 MB. Free memory was 328.7 MB in the beginning and 347.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.0 GB. [2021-03-10 17:32:53,769 INFO L168 Benchmark]: TraceAbstraction took 4774.25 ms. Allocated memory was 367.0 MB in the beginning and 897.6 MB in the end (delta: 530.6 MB). Free memory was 346.4 MB in the beginning and 492.3 MB in the end (delta: -145.9 MB). Peak memory consumption was 384.3 MB. Max. memory is 16.0 GB. [2021-03-10 17:32:53,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 456.35 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.2 MB in the beginning and 331.8 MB in the end (delta: -98.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.43 ms. Allocated memory is still 367.0 MB. Free memory was 331.8 MB in the beginning and 330.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 36.74 ms. Allocated memory is still 367.0 MB. Free memory was 330.1 MB in the beginning and 328.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 454.86 ms. Allocated memory is still 367.0 MB. Free memory was 328.7 MB in the beginning and 347.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4774.25 ms. Allocated memory was 367.0 MB in the beginning and 897.6 MB in the end (delta: 530.6 MB). Free memory was 346.4 MB in the beginning and 492.3 MB in the end (delta: -145.9 MB). Peak memory consumption was 384.3 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4692.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 111.9ms, AutomataDifference: 2005.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 393.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 799 SDtfs, 1466 SDslu, 2916 SDs, 0 SdLazy, 417 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 323.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1386.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7565occurred in iteration=0, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 676.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 2432 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.8ms SsaConstructionTime, 201.1ms SatisfiabilityAnalysisTime, 1016.1ms InterpolantComputationTime, 405 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 396 ConstructedInterpolants, 0 QuantifiedInterpolants, 1498 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...