/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:14:26,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:14:26,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:14:26,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:14:26,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:14:26,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:14:26,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:14:26,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:14:26,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:14:26,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:14:26,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:14:26,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:14:26,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:14:26,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:14:26,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:14:26,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:14:26,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:14:26,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:14:26,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:14:26,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:14:26,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:14:26,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:14:26,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:14:26,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:14:26,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:14:26,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:14:26,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:14:26,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:14:26,957 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-keepdead.epf [2021-01-20 21:14:27,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:14:27,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:14:27,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:14:27,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:14:27,025 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:14:27,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:14:27,025 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:14:27,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:14:27,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:14:27,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:14:27,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:14:27,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:14:27,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:14:27,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:14:27,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:14:27,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:14:27,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:14:27,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:14:27,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:14:27,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:14:27,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:14:27,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:14:27,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:14:27,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:14:27,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:14:27,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:14:27,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:14:27,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:14:27,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:14:27,033 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:14:27,033 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:14:27,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:14:27,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:14:27,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:14:27,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:14:27,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:14:27,537 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:14:27,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2021-01-20 21:14:27,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277025cf1/f870b6344af146f7afbbb30132598f71/FLAG9f410d28d [2021-01-20 21:14:28,355 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:14:28,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2021-01-20 21:14:28,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277025cf1/f870b6344af146f7afbbb30132598f71/FLAG9f410d28d [2021-01-20 21:14:28,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277025cf1/f870b6344af146f7afbbb30132598f71 [2021-01-20 21:14:28,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:14:28,633 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:14:28,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:14:28,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:14:28,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:14:28,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:14:28" (1/1) ... [2021-01-20 21:14:28,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf53334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:28, skipping insertion in model container [2021-01-20 21:14:28,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:14:28" (1/1) ... [2021-01-20 21:14:28,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:14:28,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:14:29,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:14:29,359 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:14:29,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:14:29,544 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:14:29,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29 WrapperNode [2021-01-20 21:14:29,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:14:29,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:14:29,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:14:29,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:14:29,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:14:29,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:14:29,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:14:29,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:14:29,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (1/1) ... [2021-01-20 21:14:29,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:14:29,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:14:29,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:14:29,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:14:29,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (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 [2021-01-20 21:14:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:14:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:14:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:14:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:14:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:14:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:14:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:14:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:14:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:14:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:14:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-20 21:14:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-20 21:14:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:14:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:14:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:14:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:14:29,740 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 21:14:30,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:14:30,261 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:14:30,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:14:30 BoogieIcfgContainer [2021-01-20 21:14:30,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:14:30,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:14:30,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:14:30,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:14:30,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:14:28" (1/3) ... [2021-01-20 21:14:30,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d552a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:14:30, skipping insertion in model container [2021-01-20 21:14:30,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:29" (2/3) ... [2021-01-20 21:14:30,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d552a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:14:30, skipping insertion in model container [2021-01-20 21:14:30,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:14:30" (3/3) ... [2021-01-20 21:14:30,274 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2021-01-20 21:14:30,292 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:14:30,293 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:14:30,297 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:14:30,298 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:14:30,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,361 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,361 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,361 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,361 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,365 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,365 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,367 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,367 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,369 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,370 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,370 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,370 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,371 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,371 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,371 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,371 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,372 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,372 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,372 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,373 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,373 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,373 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,373 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,376 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,376 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,377 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,385 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,386 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,386 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,386 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,396 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:30,402 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:14:30,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-20 21:14:30,456 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:14:30,456 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:14:30,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:14:30,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:14:30,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:14:30,457 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:14:30,457 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:14:30,457 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:14:30,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 89 transitions, 198 flow [2021-01-20 21:14:40,389 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 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) [2021-01-20 21:14:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 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) [2021-01-20 21:14:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:14:40,925 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:40,926 INFO L504 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] [2021-01-20 21:14:40,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash -864945227, now seen corresponding path program 1 times [2021-01-20 21:14:40,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:40,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335089750] [2021-01-20 21:14:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:41,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335089750] [2021-01-20 21:14:41,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:41,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:41,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960871773] [2021-01-20 21:14:41,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:41,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:41,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:41,567 INFO L87 Difference]: Start difference. First operand has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 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 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) [2021-01-20 21:14:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:43,375 INFO L93 Difference]: Finished difference Result 73967 states and 317811 transitions. [2021-01-20 21:14:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:43,377 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 [2021-01-20 21:14:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:43,380 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:43,380 INFO L78 Accepts]: Start accepts. Automaton has 73967 states and 317811 transitions. Word has length 45 [2021-01-20 21:14:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:43,382 INFO L481 AbstractCegarLoop]: Abstraction has 73967 states and 317811 transitions. [2021-01-20 21:14:43,382 INFO L482 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) [2021-01-20 21:14:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 73967 states and 317811 transitions. [2021-01-20 21:14:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:14:43,659 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:43,662 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:43,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:14:43,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:43,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1139015446, now seen corresponding path program 1 times [2021-01-20 21:14:43,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:43,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584587061] [2021-01-20 21:14:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:43,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584587061] [2021-01-20 21:14:43,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:43,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:43,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632804557] [2021-01-20 21:14:43,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:43,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:43,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:43,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:43,939 INFO L87 Difference]: Start difference. First operand 73967 states and 317811 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:45,675 INFO L93 Difference]: Finished difference Result 109679 states and 468735 transitions. [2021-01-20 21:14:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:45,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 21:14:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:45,681 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:45,681 INFO L78 Accepts]: Start accepts. Automaton has 109679 states and 468735 transitions. Word has length 47 [2021-01-20 21:14:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:45,682 INFO L481 AbstractCegarLoop]: Abstraction has 109679 states and 468735 transitions. [2021-01-20 21:14:45,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 109679 states and 468735 transitions. [2021-01-20 21:14:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:14:45,805 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:45,806 INFO L504 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] [2021-01-20 21:14:45,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:14:45,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1367050025, now seen corresponding path program 1 times [2021-01-20 21:14:45,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:45,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121895965] [2021-01-20 21:14:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:45,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121895965] [2021-01-20 21:14:46,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:46,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:46,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928667501] [2021-01-20 21:14:46,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:46,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:46,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:46,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:46,005 INFO L87 Difference]: Start difference. First operand 109679 states and 468735 transitions. 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) [2021-01-20 21:14:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:48,116 INFO L93 Difference]: Finished difference Result 179279 states and 761719 transitions. [2021-01-20 21:14:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:48,116 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 [2021-01-20 21:14:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:48,122 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:48,123 INFO L78 Accepts]: Start accepts. Automaton has 179279 states and 761719 transitions. Word has length 49 [2021-01-20 21:14:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:48,126 INFO L481 AbstractCegarLoop]: Abstraction has 179279 states and 761719 transitions. [2021-01-20 21:14:48,127 INFO L482 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) [2021-01-20 21:14:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 179279 states and 761719 transitions. [2021-01-20 21:14:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:14:48,705 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:48,708 INFO L504 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] [2021-01-20 21:14:48,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:14:48,709 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1400237191, now seen corresponding path program 1 times [2021-01-20 21:14:48,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:48,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169158213] [2021-01-20 21:14:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:48,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169158213] [2021-01-20 21:14:48,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:48,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:14:48,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403542828] [2021-01-20 21:14:48,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:14:48,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:48,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:14:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:14:48,966 INFO L87 Difference]: Start difference. First operand 179279 states and 761719 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) [2021-01-20 21:14:52,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:52,072 INFO L93 Difference]: Finished difference Result 250607 states and 1060751 transitions. [2021-01-20 21:14:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:14:52,073 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 [2021-01-20 21:14:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:52,074 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:14:52,074 INFO L78 Accepts]: Start accepts. Automaton has 250607 states and 1060751 transitions. Word has length 50 [2021-01-20 21:14:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:52,074 INFO L481 AbstractCegarLoop]: Abstraction has 250607 states and 1060751 transitions. [2021-01-20 21:14:52,074 INFO L482 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) [2021-01-20 21:14:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 250607 states and 1060751 transitions. [2021-01-20 21:14:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:14:52,898 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:52,898 INFO L504 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] [2021-01-20 21:14:52,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:14:52,898 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:52,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1369609187, now seen corresponding path program 2 times [2021-01-20 21:14:52,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:52,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283096487] [2021-01-20 21:14:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:53,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283096487] [2021-01-20 21:14:53,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:53,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:53,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757068739] [2021-01-20 21:14:53,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:53,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:53,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:53,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:53,087 INFO L87 Difference]: Start difference. First operand 250607 states and 1060751 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-01-20 21:14:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:57,986 INFO L93 Difference]: Finished difference Result 393071 states and 1653775 transitions. [2021-01-20 21:14:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:57,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 [2021-01-20 21:14:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:58,001 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:58,001 INFO L78 Accepts]: Start accepts. Automaton has 393071 states and 1653775 transitions. Word has length 50 [2021-01-20 21:14:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:58,002 INFO L481 AbstractCegarLoop]: Abstraction has 393071 states and 1653775 transitions. [2021-01-20 21:14:58,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-01-20 21:14:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 393071 states and 1653775 transitions. [2021-01-20 21:14:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 21:14:58,264 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:58,264 INFO L504 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] [2021-01-20 21:14:58,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:14:58,265 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1165374980, now seen corresponding path program 1 times [2021-01-20 21:14:58,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:58,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907949827] [2021-01-20 21:14:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:58,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907949827] [2021-01-20 21:14:58,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:58,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:58,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647097094] [2021-01-20 21:14:58,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:58,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:58,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:58,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:58,426 INFO L87 Difference]: Start difference. First operand 393071 states and 1653775 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-01-20 21:15:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:06,010 INFO L93 Difference]: Finished difference Result 642287 states and 2667983 transitions. [2021-01-20 21:15:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:15:06,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2021-01-20 21:15:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:06,011 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:15:06,012 INFO L78 Accepts]: Start accepts. Automaton has 642287 states and 2667983 transitions. Word has length 51 [2021-01-20 21:15:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:06,012 INFO L481 AbstractCegarLoop]: Abstraction has 642287 states and 2667983 transitions. [2021-01-20 21:15:06,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-01-20 21:15:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 642287 states and 2667983 transitions. [2021-01-20 21:15:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:15:06,372 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:15:06,373 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:15:06,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:15:06,373 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:15:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:15:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1153343617, now seen corresponding path program 1 times [2021-01-20 21:15:06,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:15:06,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931763693] [2021-01-20 21:15:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:15:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:15:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:15:07,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931763693] [2021-01-20 21:15:07,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:15:07,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:15:07,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795729734] [2021-01-20 21:15:07,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:15:07,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:15:07,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:15:07,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:15:07,570 INFO L87 Difference]: Start difference. First operand 642287 states and 2667983 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:15:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:21,724 INFO L93 Difference]: Finished difference Result 1211759 states and 4955951 transitions. [2021-01-20 21:15:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 21:15:21,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 21:15:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:21,726 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:15:21,726 INFO L78 Accepts]: Start accepts. Automaton has 1211759 states and 4955951 transitions. Word has length 52 [2021-01-20 21:15:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:21,726 INFO L481 AbstractCegarLoop]: Abstraction has 1211759 states and 4955951 transitions. [2021-01-20 21:15:21,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:15:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1211759 states and 4955951 transitions. [2021-01-20 21:15:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 21:15:22,290 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:15:22,290 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:15:22,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:15:22,291 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:15:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:15:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash -613264223, now seen corresponding path program 1 times [2021-01-20 21:15:22,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:15:22,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079902004] [2021-01-20 21:15:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:15:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:15:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:15:22,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079902004] [2021-01-20 21:15:22,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:15:22,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:15:22,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025951132] [2021-01-20 21:15:22,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:15:22,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:15:22,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:15:22,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:15:22,437 INFO L87 Difference]: Start difference. First operand 1211759 states and 4955951 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:15:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:34,846 INFO L93 Difference]: Finished difference Result 843003 states and 3396331 transitions. [2021-01-20 21:15:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:15:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-01-20 21:15:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:34,849 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:15:34,850 INFO L78 Accepts]: Start accepts. Automaton has 843003 states and 3396331 transitions. Word has length 53 [2021-01-20 21:15:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:34,850 INFO L481 AbstractCegarLoop]: Abstraction has 843003 states and 3396331 transitions. [2021-01-20 21:15:34,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:15:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 843003 states and 3396331 transitions. [2021-01-20 21:15:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:15:35,720 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:15:35,720 INFO L504 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] [2021-01-20 21:15:35,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:15:35,721 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:15:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:15:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1217531091, now seen corresponding path program 1 times [2021-01-20 21:15:35,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:15:35,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015746355] [2021-01-20 21:15:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:15:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:15:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:15:36,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015746355] [2021-01-20 21:15:36,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:15:36,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:15:36,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414138140] [2021-01-20 21:15:36,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:15:36,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:15:36,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:15:36,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:15:36,295 INFO L87 Difference]: Start difference. First operand 843003 states and 3396331 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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) [2021-01-20 21:15:37,816 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-01-20 21:15:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:44,211 INFO L93 Difference]: Finished difference Result 462183 states and 1823621 transitions. [2021-01-20 21:15:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:15:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 [2021-01-20 21:15:44,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:44,212 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:15:44,212 INFO L78 Accepts]: Start accepts. Automaton has 462183 states and 1823621 transitions. Word has length 54 [2021-01-20 21:15:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:44,213 INFO L481 AbstractCegarLoop]: Abstraction has 462183 states and 1823621 transitions. [2021-01-20 21:15:44,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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) [2021-01-20 21:15:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 462183 states and 1823621 transitions. [2021-01-20 21:15:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-20 21:15:44,901 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:15:44,902 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:15:44,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 21:15:44,902 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:15:44,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:15:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1586012644, now seen corresponding path program 1 times [2021-01-20 21:15:44,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:15:44,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068663843] [2021-01-20 21:15:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:15:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:15:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:15:45,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068663843] [2021-01-20 21:15:45,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:15:45,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:15:45,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185393524] [2021-01-20 21:15:45,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:15:45,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:15:45,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:15:45,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:15:45,179 INFO L87 Difference]: Start difference. First operand 462183 states and 1823621 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:15:45,706 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-01-20 21:15:46,031 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-01-20 21:15:46,166 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-01-20 21:15:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:50,431 INFO L93 Difference]: Finished difference Result 238119 states and 925901 transitions. [2021-01-20 21:15:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:15:50,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-01-20 21:15:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:50,437 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:15:50,437 INFO L78 Accepts]: Start accepts. Automaton has 238119 states and 925901 transitions. Word has length 55 [2021-01-20 21:15:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:50,438 INFO L481 AbstractCegarLoop]: Abstraction has 238119 states and 925901 transitions. [2021-01-20 21:15:50,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:15:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 238119 states and 925901 transitions. [2021-01-20 21:15:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-20 21:15:51,200 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:15:51,200 INFO L504 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] [2021-01-20 21:15:51,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 21:15:51,201 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:15:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:15:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -237436163, now seen corresponding path program 1 times [2021-01-20 21:15:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:15:51,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277682985] [2021-01-20 21:15:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:15:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:15:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:15:51,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277682985] [2021-01-20 21:15:51,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:15:51,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-20 21:15:51,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219886343] [2021-01-20 21:15:51,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 21:15:51,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:15:51,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 21:15:51,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-20 21:15:51,962 INFO L87 Difference]: Start difference. First operand 238119 states and 925901 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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) [2021-01-20 21:15:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:54,535 INFO L93 Difference]: Finished difference Result 156093 states and 608543 transitions. [2021-01-20 21:15:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 21:15:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 [2021-01-20 21:15:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:54,536 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-01-20 21:15:54,540 INFO L78 Accepts]: Start accepts. Automaton has 156093 states and 608543 transitions. Word has length 57 [2021-01-20 21:15:54,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:54,541 INFO L481 AbstractCegarLoop]: Abstraction has 156093 states and 608543 transitions. [2021-01-20 21:15:54,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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) [2021-01-20 21:15:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 156093 states and 608543 transitions. [2021-01-20 21:15:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-20 21:15:55,018 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:15:55,018 INFO L504 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] [2021-01-20 21:15:55,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-20 21:15:55,019 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:15:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:15:55,019 INFO L82 PathProgramCache]: Analyzing trace with hash 665182430, now seen corresponding path program 1 times [2021-01-20 21:15:55,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:15:55,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032844991] [2021-01-20 21:15:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:15:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:15:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:15:55,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032844991] [2021-01-20 21:15:55,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:15:55,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:15:55,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5255899] [2021-01-20 21:15:55,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:15:55,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:15:55,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:15:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:15:55,167 INFO L87 Difference]: Start difference. First operand 156093 states and 608543 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2021-01-20 21:15:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:15:58,177 INFO L93 Difference]: Finished difference Result 256576 states and 995952 transitions. [2021-01-20 21:15:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:15:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2021-01-20 21:15:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:15:58,179 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:15:58,179 INFO L78 Accepts]: Start accepts. Automaton has 256576 states and 995952 transitions. Word has length 59 [2021-01-20 21:15:58,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:15:58,179 INFO L481 AbstractCegarLoop]: Abstraction has 256576 states and 995952 transitions. [2021-01-20 21:15:58,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2021-01-20 21:15:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 256576 states and 995952 transitions. [2021-01-20 21:15:59,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:15:59,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-20 21:16:00,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:16:00 BasicIcfg [2021-01-20 21:16:00,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:16:00,015 INFO L168 Benchmark]: Toolchain (without parser) took 91377.75 ms. Allocated memory was 302.0 MB in the beginning and 15.9 GB in the end (delta: 15.6 GB). Free memory was 275.8 MB in the beginning and 4.3 GB in the end (delta: -4.0 GB). Peak memory consumption was 12.2 GB. Max. memory is 16.0 GB. [2021-01-20 21:16:00,027 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:16:00,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 907.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 271.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.0 GB. [2021-01-20 21:16:00,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.04 ms. Allocated memory is still 302.0 MB. Free memory was 271.4 MB in the beginning and 269.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:16:00,041 INFO L168 Benchmark]: Boogie Preprocessor took 31.33 ms. Allocated memory is still 302.0 MB. Free memory was 269.3 MB in the beginning and 268.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:16:00,045 INFO L168 Benchmark]: RCFGBuilder took 631.61 ms. Allocated memory is still 302.0 MB. Free memory was 268.1 MB in the beginning and 244.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:16:00,047 INFO L168 Benchmark]: TraceAbstraction took 89743.88 ms. Allocated memory was 302.0 MB in the beginning and 15.9 GB in the end (delta: 15.6 GB). Free memory was 244.2 MB in the beginning and 4.3 GB in the end (delta: -4.0 GB). Peak memory consumption was 12.2 GB. Max. memory is 16.0 GB. [2021-01-20 21:16:00,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 907.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 271.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.04 ms. Allocated memory is still 302.0 MB. Free memory was 271.4 MB in the beginning and 269.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.33 ms. Allocated memory is still 302.0 MB. Free memory was 269.3 MB in the beginning and 268.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 631.61 ms. Allocated memory is still 302.0 MB. Free memory was 268.1 MB in the beginning and 244.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 89743.88 ms. Allocated memory was 302.0 MB in the beginning and 15.9 GB in the end (delta: 15.6 GB). Free memory was 244.2 MB in the beginning and 4.3 GB in the end (delta: -4.0 GB). Peak memory consumption was 12.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 89.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 66.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.9s, HoareTripleCheckerStatistics: 1729 SDtfs, 3369 SDslu, 6059 SDs, 0 SdLazy, 650 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1211759occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 622 NumberOfCodeBlocks, 622 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 610 ConstructedInterpolants, 0 QuantifiedInterpolants, 83442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...