/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/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:54:24,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:54:24,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:54:24,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:54:24,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 19:54:24,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 19:54:24,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 19:54:24,158 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 [2021-06-05 19:54:24,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:54:24,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:54:24,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:54:24,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:54:24,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:54:24,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:54:24,194 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:54:24,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:54:24,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:54:24,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:54:24,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:54:24,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:54:24,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:54:24,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:54:24,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:54:24,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:54:24,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:54:24,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:54:24,532 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:54:24,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-06-05 19:54:24,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55ffe534/bab39eb76cf844e3a41698120cb830fc/FLAG414890a13 [2021-06-05 19:54:25,071 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:54:25,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-06-05 19:54:25,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55ffe534/bab39eb76cf844e3a41698120cb830fc/FLAG414890a13 [2021-06-05 19:54:25,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55ffe534/bab39eb76cf844e3a41698120cb830fc [2021-06-05 19:54:25,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:54:25,098 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:54:25,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:54:25,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:54:25,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:54:25,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f98599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25, skipping insertion in model container [2021-06-05 19:54:25,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:54:25,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:54:25,343 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i[949,962] [2021-06-05 19:54:25,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:54:25,525 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:54:25,537 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i[949,962] [2021-06-05 19:54:25,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:54:25,656 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:54:25,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25 WrapperNode [2021-06-05 19:54:25,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:54:25,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:54:25,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:54:25,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:54:25,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:54:25,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:54:25,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:54:25,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:54:25,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (1/1) ... [2021-06-05 19:54:25,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:54:25,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:54:25,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:54:25,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:54:25,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (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 [2021-06-05 19:54:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:54:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:54:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:54:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:54:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:54:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:54:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:54:25,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:54:25,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:54:26,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:54:26,260 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:54:26,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:54:26 BoogieIcfgContainer [2021-06-05 19:54:26,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:54:26,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:54:26,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:54:26,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:54:26,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:54:25" (1/3) ... [2021-06-05 19:54:26,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d6aba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:54:26, skipping insertion in model container [2021-06-05 19:54:26,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:54:25" (2/3) ... [2021-06-05 19:54:26,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d6aba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:54:26, skipping insertion in model container [2021-06-05 19:54:26,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:54:26" (3/3) ... [2021-06-05 19:54:26,271 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2021-06-05 19:54:26,279 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:54:26,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:54:26,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:54:26,280 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:54:26,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,321 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,321 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,322 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,322 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,322 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:54:26,336 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:54:26,355 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:54:26,381 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:54:26,381 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:54:26,381 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:54:26,381 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:54:26,381 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:54:26,382 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:54:26,382 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:54:26,382 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:54:26,396 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 19:54:26,885 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-06-05 19:54:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-06-05 19:54:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 19:54:26,954 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:26,954 INFO L554 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] [2021-06-05 19:54:26,955 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:26,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1924556435, now seen corresponding path program 1 times [2021-06-05 19:54:26,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:26,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264012796] [2021-06-05 19:54:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:27,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:27,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264012796] [2021-06-05 19:54:27,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264012796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:27,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:27,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:54:27,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542607849] [2021-06-05 19:54:27,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:54:27,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:54:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:54:27,384 INFO L87 Difference]: Start difference. First operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-06-05 19:54:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:27,723 INFO L93 Difference]: Finished difference Result 10487 states and 36117 transitions. [2021-06-05 19:54:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:54:27,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 [2021-06-05 19:54:27,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:27,765 INFO L225 Difference]: With dead ends: 10487 [2021-06-05 19:54:27,765 INFO L226 Difference]: Without dead ends: 3977 [2021-06-05 19:54:27,766 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:54:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-05 19:54:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2021-06-05 19:54:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 3.358148893360161) internal successors, (13352), 3976 states have internal predecessors, (13352), 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) [2021-06-05 19:54:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 13352 transitions. [2021-06-05 19:54:27,995 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 13352 transitions. Word has length 49 [2021-06-05 19:54:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:27,999 INFO L482 AbstractCegarLoop]: Abstraction has 3977 states and 13352 transitions. [2021-06-05 19:54:28,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-06-05 19:54:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 13352 transitions. [2021-06-05 19:54:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:54:28,015 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:28,015 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:54:28,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:54:28,016 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:28,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2063890066, now seen corresponding path program 1 times [2021-06-05 19:54:28,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:28,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299313808] [2021-06-05 19:54:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:28,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:28,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299313808] [2021-06-05 19:54:28,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299313808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:28,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:28,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:54:28,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203421966] [2021-06-05 19:54:28,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:54:28,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:28,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:54:28,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:54:28,251 INFO L87 Difference]: Start difference. First operand 3977 states and 13352 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-05 19:54:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:28,491 INFO L93 Difference]: Finished difference Result 5237 states and 17450 transitions. [2021-06-05 19:54:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:54:28,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-06-05 19:54:28,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:28,506 INFO L225 Difference]: With dead ends: 5237 [2021-06-05 19:54:28,507 INFO L226 Difference]: Without dead ends: 2472 [2021-06-05 19:54:28,508 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 224.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 19:54:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-06-05 19:54:28,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2021-06-05 19:54:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2471 states have (on average 3.2598138405503843) internal successors, (8055), 2471 states have internal predecessors, (8055), 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) [2021-06-05 19:54:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 8055 transitions. [2021-06-05 19:54:28,603 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 8055 transitions. Word has length 51 [2021-06-05 19:54:28,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:28,604 INFO L482 AbstractCegarLoop]: Abstraction has 2472 states and 8055 transitions. [2021-06-05 19:54:28,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-05 19:54:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 8055 transitions. [2021-06-05 19:54:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:54:28,612 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:28,612 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:54:28,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:54:28,613 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:28,620 INFO L82 PathProgramCache]: Analyzing trace with hash 985460192, now seen corresponding path program 1 times [2021-06-05 19:54:28,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:28,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076251321] [2021-06-05 19:54:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:28,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:28,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076251321] [2021-06-05 19:54:28,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076251321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:28,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:28,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:54:28,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565312518] [2021-06-05 19:54:28,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:54:28,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:28,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:54:28,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:54:28,858 INFO L87 Difference]: Start difference. First operand 2472 states and 8055 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-06-05 19:54:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:29,065 INFO L93 Difference]: Finished difference Result 3672 states and 11923 transitions. [2021-06-05 19:54:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:54:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2021-06-05 19:54:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:29,076 INFO L225 Difference]: With dead ends: 3672 [2021-06-05 19:54:29,076 INFO L226 Difference]: Without dead ends: 1752 [2021-06-05 19:54:29,076 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 208.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:54:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-06-05 19:54:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1752. [2021-06-05 19:54:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 3.1427755568246716) internal successors, (5503), 1751 states have internal predecessors, (5503), 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) [2021-06-05 19:54:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5503 transitions. [2021-06-05 19:54:29,133 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5503 transitions. Word has length 54 [2021-06-05 19:54:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:29,134 INFO L482 AbstractCegarLoop]: Abstraction has 1752 states and 5503 transitions. [2021-06-05 19:54:29,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-06-05 19:54:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5503 transitions. [2021-06-05 19:54:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 19:54:29,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:29,139 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:54:29,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:54:29,139 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:29,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1324526849, now seen corresponding path program 1 times [2021-06-05 19:54:29,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:29,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642995743] [2021-06-05 19:54:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:29,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:29,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642995743] [2021-06-05 19:54:29,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642995743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:29,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:29,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:54:29,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136599222] [2021-06-05 19:54:29,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:54:29,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:54:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:54:29,279 INFO L87 Difference]: Start difference. First operand 1752 states and 5503 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:54:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:29,404 INFO L93 Difference]: Finished difference Result 2226 states and 6936 transitions. [2021-06-05 19:54:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:54:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 19:54:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:29,413 INFO L225 Difference]: With dead ends: 2226 [2021-06-05 19:54:29,413 INFO L226 Difference]: Without dead ends: 1650 [2021-06-05 19:54:29,414 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:54:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-06-05 19:54:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-06-05 19:54:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1649 states have (on average 3.12310491206792) internal successors, (5150), 1649 states have internal predecessors, (5150), 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) [2021-06-05 19:54:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 5150 transitions. [2021-06-05 19:54:29,465 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 5150 transitions. Word has length 56 [2021-06-05 19:54:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:29,467 INFO L482 AbstractCegarLoop]: Abstraction has 1650 states and 5150 transitions. [2021-06-05 19:54:29,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:54:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 5150 transitions. [2021-06-05 19:54:29,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 19:54:29,472 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:29,472 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:54:29,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:54:29,476 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash -213964401, now seen corresponding path program 1 times [2021-06-05 19:54:29,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:29,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265195993] [2021-06-05 19:54:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:29,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:29,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265195993] [2021-06-05 19:54:29,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265195993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:29,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:29,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:54:29,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262350657] [2021-06-05 19:54:29,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:54:29,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:29,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:54:29,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:54:29,566 INFO L87 Difference]: Start difference. First operand 1650 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-05 19:54:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:29,707 INFO L93 Difference]: Finished difference Result 1839 states and 5627 transitions. [2021-06-05 19:54:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:54:29,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-06-05 19:54:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:29,716 INFO L225 Difference]: With dead ends: 1839 [2021-06-05 19:54:29,716 INFO L226 Difference]: Without dead ends: 1335 [2021-06-05 19:54:29,717 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:54:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-06-05 19:54:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-06-05 19:54:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1334 states have (on average 3.028485757121439) internal successors, (4040), 1334 states have internal predecessors, (4040), 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) [2021-06-05 19:54:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 4040 transitions. [2021-06-05 19:54:29,748 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 4040 transitions. Word has length 57 [2021-06-05 19:54:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:29,748 INFO L482 AbstractCegarLoop]: Abstraction has 1335 states and 4040 transitions. [2021-06-05 19:54:29,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-05 19:54:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 4040 transitions. [2021-06-05 19:54:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 19:54:29,752 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:29,752 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:54:29,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:54:29,752 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash -92312029, now seen corresponding path program 1 times [2021-06-05 19:54:29,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:29,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095492073] [2021-06-05 19:54:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:29,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:29,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095492073] [2021-06-05 19:54:29,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095492073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:29,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:29,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:54:29,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410407177] [2021-06-05 19:54:29,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:54:29,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:29,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:54:29,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:54:29,874 INFO L87 Difference]: Start difference. First operand 1335 states and 4040 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:54:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:30,029 INFO L93 Difference]: Finished difference Result 1173 states and 3437 transitions. [2021-06-05 19:54:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:54:30,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 19:54:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:30,033 INFO L225 Difference]: With dead ends: 1173 [2021-06-05 19:54:30,033 INFO L226 Difference]: Without dead ends: 849 [2021-06-05 19:54:30,034 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:54:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-06-05 19:54:30,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-06-05 19:54:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.8537735849056602) internal successors, (2420), 848 states have internal predecessors, (2420), 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) [2021-06-05 19:54:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2420 transitions. [2021-06-05 19:54:30,053 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2420 transitions. Word has length 58 [2021-06-05 19:54:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:30,054 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2420 transitions. [2021-06-05 19:54:30,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:54:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2420 transitions. [2021-06-05 19:54:30,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 19:54:30,058 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:54:30,058 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:54:30,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:54:30,058 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:54:30,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:54:30,058 INFO L82 PathProgramCache]: Analyzing trace with hash 747863938, now seen corresponding path program 1 times [2021-06-05 19:54:30,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:54:30,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653920990] [2021-06-05 19:54:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:54:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:54:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:54:30,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:54:30,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653920990] [2021-06-05 19:54:30,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653920990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:54:30,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:54:30,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:54:30,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830235943] [2021-06-05 19:54:30,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:54:30,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:54:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:54:30,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:54:30,177 INFO L87 Difference]: Start difference. First operand 849 states and 2420 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-06-05 19:54:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:54:30,244 INFO L93 Difference]: Finished difference Result 795 states and 2258 transitions. [2021-06-05 19:54:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:54:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-06-05 19:54:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:54:30,244 INFO L225 Difference]: With dead ends: 795 [2021-06-05 19:54:30,245 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:54:30,246 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:54:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:54:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:54:30,247 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) [2021-06-05 19:54:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:54:30,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-05 19:54:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:54:30,247 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:54:30,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-06-05 19:54:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:54:30,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:54:30,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:54:30,249 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:54:30,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:54:30 BasicIcfg [2021-06-05 19:54:30,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:54:30,255 INFO L168 Benchmark]: Toolchain (without parser) took 5154.01 ms. Allocated memory was 367.0 MB in the beginning and 490.7 MB in the end (delta: 123.7 MB). Free memory was 329.7 MB in the beginning and 424.0 MB in the end (delta: -94.4 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.0 GB. [2021-06-05 19:54:30,256 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 367.0 MB. Free memory was 347.9 MB in the beginning and 347.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:54:30,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 557.63 ms. Allocated memory is still 367.0 MB. Free memory was 329.4 MB in the beginning and 327.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-05 19:54:30,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.05 ms. Allocated memory is still 367.0 MB. Free memory was 327.8 MB in the beginning and 326.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:54:30,259 INFO L168 Benchmark]: Boogie Preprocessor took 32.09 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 324.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:54:30,261 INFO L168 Benchmark]: RCFGBuilder took 515.70 ms. Allocated memory is still 367.0 MB. Free memory was 324.7 MB in the beginning and 299.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:54:30,261 INFO L168 Benchmark]: TraceAbstraction took 3986.90 ms. Allocated memory was 367.0 MB in the beginning and 490.7 MB in the end (delta: 123.7 MB). Free memory was 299.5 MB in the beginning and 424.0 MB in the end (delta: -124.5 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.0 GB. [2021-06-05 19:54:30,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 367.0 MB. Free memory was 347.9 MB in the beginning and 347.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 557.63 ms. Allocated memory is still 367.0 MB. Free memory was 329.4 MB in the beginning and 327.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.05 ms. Allocated memory is still 367.0 MB. Free memory was 327.8 MB in the beginning and 326.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.09 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 324.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 515.70 ms. Allocated memory is still 367.0 MB. Free memory was 324.7 MB in the beginning and 299.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3986.90 ms. Allocated memory was 367.0 MB in the beginning and 490.7 MB in the end (delta: 123.7 MB). Free memory was 299.5 MB in the beginning and 424.0 MB in the end (delta: -124.5 MB). Peak memory consumption was 2.3 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3869.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 105.0ms, AutomataDifference: 1421.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 503.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 671 SDtfs, 1034 SDslu, 2217 SDs, 0 SdLazy, 284 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 229.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 996.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8009occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 470.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.3ms SsaConstructionTime, 209.8ms SatisfiabilityAnalysisTime, 932.0ms InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 378 ConstructedInterpolants, 0 QuantifiedInterpolants, 1160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...