/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/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 18:06:39,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 18:06:39,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 18:06:40,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 18:06:40,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 18:06:40,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 18:06:40,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 18:06:40,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 18:06:40,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 18:06:40,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 18:06:40,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 18:06:40,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 18:06:40,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 18:06:40,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 18:06:40,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 18:06:40,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 18:06:40,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 18:06:40,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 18:06:40,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 18:06:40,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 18:06:40,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 18:06:40,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 18:06:40,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 18:06:40,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 18:06:40,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 18:06:40,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 18:06:40,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 18:06:40,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 18:06:40,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 18:06:40,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 18:06:40,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 18:06:40,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 18:06:40,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 18:06:40,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 18:06:40,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 18:06:40,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 18:06:40,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 18:06:40,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 18:06:40,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 18:06:40,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 18:06:40,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 18:06:40,094 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 18:06:40,145 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 18:06:40,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 18:06:40,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 18:06:40,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 18:06:40,149 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 18:06:40,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 18:06:40,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 18:06:40,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 18:06:40,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 18:06:40,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 18:06:40,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 18:06:40,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 18:06:40,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 18:06:40,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 18:06:40,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 18:06:40,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 18:06:40,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 18:06:40,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 18:06:40,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 18:06:40,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 18:06:40,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 18:06:40,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 18:06:40,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 18:06:40,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 18:06:40,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 18:06:40,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 18:06:40,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 18:06:40,156 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 18:06:40,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 18:06:40,156 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 18:06:40,156 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 18:06:40,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 18:06:40,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 18:06:40,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 18:06:40,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 18:06:40,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 18:06:40,560 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 18:06:40,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2021-01-20 18:06:40,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b8c7fcd8/3ed4ceec47ee470ca7a1753cc398fbf1/FLAGa2a062338 [2021-01-20 18:06:41,375 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 18:06:41,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2021-01-20 18:06:41,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b8c7fcd8/3ed4ceec47ee470ca7a1753cc398fbf1/FLAGa2a062338 [2021-01-20 18:06:41,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b8c7fcd8/3ed4ceec47ee470ca7a1753cc398fbf1 [2021-01-20 18:06:41,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 18:06:41,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 18:06:41,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 18:06:41,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 18:06:41,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 18:06:41,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 06:06:41" (1/1) ... [2021-01-20 18:06:41,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f0a80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:41, skipping insertion in model container [2021-01-20 18:06:41,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 06:06:41" (1/1) ... [2021-01-20 18:06:41,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 18:06:41,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 18:06:42,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 18:06:42,105 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 18:06:42,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 18:06:42,299 INFO L208 MainTranslator]: Completed translation [2021-01-20 18:06:42,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42 WrapperNode [2021-01-20 18:06:42,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 18:06:42,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 18:06:42,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 18:06:42,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 18:06:42,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 18:06:42,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 18:06:42,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 18:06:42,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 18:06:42,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (1/1) ... [2021-01-20 18:06:42,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 18:06:42,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 18:06:42,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 18:06:42,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 18:06:42,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (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 18:06:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-01-20 18:06:42,552 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-01-20 18:06:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-01-20 18:06:42,553 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-01-20 18:06:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 18:06:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 18:06:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 18:06:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 18:06:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 18:06:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 18:06:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 18:06:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 18:06:42,557 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 18:06:42,958 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 18:06:42,958 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-20 18:06:42,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 06:06:42 BoogieIcfgContainer [2021-01-20 18:06:42,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 18:06:42,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 18:06:42,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 18:06:42,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 18:06:42,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 06:06:41" (1/3) ... [2021-01-20 18:06:42,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6662f6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 06:06:42, skipping insertion in model container [2021-01-20 18:06:42,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:06:42" (2/3) ... [2021-01-20 18:06:42,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6662f6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 06:06:42, skipping insertion in model container [2021-01-20 18:06:42,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 06:06:42" (3/3) ... [2021-01-20 18:06:42,969 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2021-01-20 18:06:42,983 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 18:06:42,983 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 18:06:42,987 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 18:06:42,988 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 18:06:43,014 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,014 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,015 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,015 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,015 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,015 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,015 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,016 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,016 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,016 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,016 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,017 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,017 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,017 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,017 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,017 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,019 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,019 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,019 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,019 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,019 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,019 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,020 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,020 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,021 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,023 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,023 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,023 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,023 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,023 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,024 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,024 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,024 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,024 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,024 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,025 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,026 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,026 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,026 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,026 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,027 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,029 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,030 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,030 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,030 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,030 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,030 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,036 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,036 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,036 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,036 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,037 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,037 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:06:43,039 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 18:06:43,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-20 18:06:43,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 18:06:43,071 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 18:06:43,071 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 18:06:43,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 18:06:43,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 18:06:43,071 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 18:06:43,071 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 18:06:43,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 18:06:43,082 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2021-01-20 18:06:43,202 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 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 18:06:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 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 18:06:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-20 18:06:43,226 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:43,227 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] [2021-01-20 18:06:43,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1900887756, now seen corresponding path program 1 times [2021-01-20 18:06:43,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:43,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738455363] [2021-01-20 18:06:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:43,627 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 18:06:43,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738455363] [2021-01-20 18:06:43,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:06:43,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 18:06:43,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392793980] [2021-01-20 18:06:43,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 18:06:43,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:43,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 18:06:43,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-20 18:06:43,677 INFO L87 Difference]: Start difference. First operand has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 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 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 18:06:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:43,871 INFO L93 Difference]: Finished difference Result 3336 states and 9728 transitions. [2021-01-20 18:06:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 18:06:43,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 28 [2021-01-20 18:06:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:43,876 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 18:06:43,876 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 9728 transitions. Word has length 28 [2021-01-20 18:06:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:43,877 INFO L481 AbstractCegarLoop]: Abstraction has 3336 states and 9728 transitions. [2021-01-20 18:06:43,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 18:06:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 9728 transitions. [2021-01-20 18:06:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 18:06:43,886 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:43,886 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] [2021-01-20 18:06:43,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 18:06:43,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:43,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1199752031, now seen corresponding path program 1 times [2021-01-20 18:06:43,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:43,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543754197] [2021-01-20 18:06:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:44,088 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 18:06:44,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543754197] [2021-01-20 18:06:44,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:06:44,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 18:06:44,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892577415] [2021-01-20 18:06:44,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 18:06:44,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:44,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 18:06:44,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-20 18:06:44,092 INFO L87 Difference]: Start difference. First operand 3336 states and 9728 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 18:06:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:44,271 INFO L93 Difference]: Finished difference Result 6379 states and 18647 transitions. [2021-01-20 18:06:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 18:06:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 32 [2021-01-20 18:06:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:44,273 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:44,274 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 18647 transitions. Word has length 32 [2021-01-20 18:06:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:44,275 INFO L481 AbstractCegarLoop]: Abstraction has 6379 states and 18647 transitions. [2021-01-20 18:06:44,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 18:06:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 18647 transitions. [2021-01-20 18:06:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 18:06:44,278 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:44,279 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] [2021-01-20 18:06:44,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 18:06:44,279 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:44,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1202725261, now seen corresponding path program 2 times [2021-01-20 18:06:44,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:44,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990892272] [2021-01-20 18:06:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:44,423 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 18:06:44,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990892272] [2021-01-20 18:06:44,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:06:44,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 18:06:44,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685324865] [2021-01-20 18:06:44,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 18:06:44,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:44,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 18:06:44,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 18:06:44,427 INFO L87 Difference]: Start difference. First operand 6379 states and 18647 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 18:06:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:44,695 INFO L93 Difference]: Finished difference Result 7067 states and 20591 transitions. [2021-01-20 18:06:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 18:06:44,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 32 [2021-01-20 18:06:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:44,697 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:44,697 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 20591 transitions. Word has length 32 [2021-01-20 18:06:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:44,697 INFO L481 AbstractCegarLoop]: Abstraction has 7067 states and 20591 transitions. [2021-01-20 18:06:44,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 18:06:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 20591 transitions. [2021-01-20 18:06:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-20 18:06:44,705 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:44,706 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] [2021-01-20 18:06:44,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 18:06:44,706 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:44,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1299742308, now seen corresponding path program 1 times [2021-01-20 18:06:44,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:44,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299566875] [2021-01-20 18:06:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:44,849 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 18:06:44,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299566875] [2021-01-20 18:06:44,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:06:44,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 18:06:44,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329687441] [2021-01-20 18:06:44,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 18:06:44,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:44,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 18:06:44,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 18:06:44,852 INFO L87 Difference]: Start difference. First operand 7067 states and 20591 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 18:06:45,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:45,106 INFO L93 Difference]: Finished difference Result 9179 states and 26799 transitions. [2021-01-20 18:06:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 18:06:45,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-01-20 18:06:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:45,108 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:06:45,108 INFO L78 Accepts]: Start accepts. Automaton has 9179 states and 26799 transitions. Word has length 36 [2021-01-20 18:06:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:45,109 INFO L481 AbstractCegarLoop]: Abstraction has 9179 states and 26799 transitions. [2021-01-20 18:06:45,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 18:06:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9179 states and 26799 transitions. [2021-01-20 18:06:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-20 18:06:45,115 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:45,116 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] [2021-01-20 18:06:45,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 18:06:45,116 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1296769078, now seen corresponding path program 2 times [2021-01-20 18:06:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:45,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010931837] [2021-01-20 18:06:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:45,223 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 18:06:45,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010931837] [2021-01-20 18:06:45,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:06:45,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 18:06:45,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211563220] [2021-01-20 18:06:45,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 18:06:45,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:45,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 18:06:45,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 18:06:45,226 INFO L87 Difference]: Start difference. First operand 9179 states and 26799 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 18:06:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:45,474 INFO L93 Difference]: Finished difference Result 9115 states and 26543 transitions. [2021-01-20 18:06:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 18:06:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-01-20 18:06:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:45,476 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:06:45,476 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 26543 transitions. Word has length 36 [2021-01-20 18:06:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:45,477 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 26543 transitions. [2021-01-20 18:06:45,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 18:06:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 26543 transitions. [2021-01-20 18:06:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-20 18:06:45,484 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:45,484 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] [2021-01-20 18:06:45,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 18:06:45,485 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1841087432, now seen corresponding path program 3 times [2021-01-20 18:06:45,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:45,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002022254] [2021-01-20 18:06:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:45,613 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 18:06:45,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002022254] [2021-01-20 18:06:45,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:06:45,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 18:06:45,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762563543] [2021-01-20 18:06:45,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 18:06:45,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:45,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 18:06:45,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 18:06:45,616 INFO L87 Difference]: Start difference. First operand 9115 states and 26543 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 18:06:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:45,997 INFO L93 Difference]: Finished difference Result 9947 states and 28975 transitions. [2021-01-20 18:06:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 18:06:45,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-01-20 18:06:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:45,998 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-01-20 18:06:45,998 INFO L78 Accepts]: Start accepts. Automaton has 9947 states and 28975 transitions. Word has length 36 [2021-01-20 18:06:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:45,999 INFO L481 AbstractCegarLoop]: Abstraction has 9947 states and 28975 transitions. [2021-01-20 18:06:45,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 18:06:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9947 states and 28975 transitions. [2021-01-20 18:06:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 18:06:46,013 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:46,013 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:46,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 18:06:46,014 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash -940103400, now seen corresponding path program 1 times [2021-01-20 18:06:46,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:46,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747912826] [2021-01-20 18:06:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:46,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747912826] [2021-01-20 18:06:46,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279685032] [2021-01-20 18:06:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:46,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-20 18:06:46,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:46,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:46,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:46,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:46,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-20 18:06:46,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131714701] [2021-01-20 18:06:46,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 18:06:46,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 18:06:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:46,360 INFO L87 Difference]: Start difference. First operand 9947 states and 28975 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:46,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:46,978 INFO L93 Difference]: Finished difference Result 13083 states and 38191 transitions. [2021-01-20 18:06:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 18:06:46,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-20 18:06:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:46,982 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-01-20 18:06:46,982 INFO L78 Accepts]: Start accepts. Automaton has 13083 states and 38191 transitions. Word has length 41 [2021-01-20 18:06:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:46,982 INFO L481 AbstractCegarLoop]: Abstraction has 13083 states and 38191 transitions. [2021-01-20 18:06:46,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13083 states and 38191 transitions. [2021-01-20 18:06:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 18:06:47,007 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:47,008 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:47,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-20 18:06:47,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:47,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1546743908, now seen corresponding path program 1 times [2021-01-20 18:06:47,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:47,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038957698] [2021-01-20 18:06:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:47,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038957698] [2021-01-20 18:06:47,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625553889] [2021-01-20 18:06:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:47,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-20 18:06:47,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:47,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:47,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:47,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-01-20 18:06:47,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403790744] [2021-01-20 18:06:47,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 18:06:47,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:47,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 18:06:47,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 18:06:47,499 INFO L87 Difference]: Start difference. First operand 13083 states and 38191 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:47,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:47,773 INFO L93 Difference]: Finished difference Result 16539 states and 48303 transitions. [2021-01-20 18:06:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-20 18:06:47,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-20 18:06:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:47,775 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-01-20 18:06:47,775 INFO L78 Accepts]: Start accepts. Automaton has 16539 states and 48303 transitions. Word has length 46 [2021-01-20 18:06:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:47,775 INFO L481 AbstractCegarLoop]: Abstraction has 16539 states and 48303 transitions. [2021-01-20 18:06:47,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 16539 states and 48303 transitions. [2021-01-20 18:06:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 18:06:47,796 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:47,796 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:48,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:48,011 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:48,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1378232494, now seen corresponding path program 2 times [2021-01-20 18:06:48,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:48,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682057349] [2021-01-20 18:06:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:48,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682057349] [2021-01-20 18:06:48,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73100319] [2021-01-20 18:06:48,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:48,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 18:06:48,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:48,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-20 18:06:48,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:48,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:06:48,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:48,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:48,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-20 18:06:48,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763835445] [2021-01-20 18:06:48,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 18:06:48,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:48,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 18:06:48,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-20 18:06:48,426 INFO L87 Difference]: Start difference. First operand 16539 states and 48303 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:48,825 INFO L93 Difference]: Finished difference Result 20379 states and 59503 transitions. [2021-01-20 18:06:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 18:06:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-20 18:06:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:48,827 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-01-20 18:06:48,827 INFO L78 Accepts]: Start accepts. Automaton has 20379 states and 59503 transitions. Word has length 46 [2021-01-20 18:06:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:48,828 INFO L481 AbstractCegarLoop]: Abstraction has 20379 states and 59503 transitions. [2021-01-20 18:06:48,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 20379 states and 59503 transitions. [2021-01-20 18:06:48,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 18:06:48,848 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:48,849 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:49,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:49,065 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash -443954361, now seen corresponding path program 1 times [2021-01-20 18:06:49,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:49,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13193400] [2021-01-20 18:06:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:49,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13193400] [2021-01-20 18:06:49,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379749319] [2021-01-20 18:06:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:49,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 18:06:49,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:49,434 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:49,453 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:49,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:49,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-20 18:06:49,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929461842] [2021-01-20 18:06:49,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 18:06:49,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:49,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 18:06:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:49,471 INFO L87 Difference]: Start difference. First operand 20379 states and 59503 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:49,952 INFO L93 Difference]: Finished difference Result 23707 states and 69231 transitions. [2021-01-20 18:06:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 18:06:49,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-20 18:06:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:49,956 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2021-01-20 18:06:49,957 INFO L78 Accepts]: Start accepts. Automaton has 23707 states and 69231 transitions. Word has length 46 [2021-01-20 18:06:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:49,957 INFO L481 AbstractCegarLoop]: Abstraction has 23707 states and 69231 transitions. [2021-01-20 18:06:49,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23707 states and 69231 transitions. [2021-01-20 18:06:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 18:06:50,074 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:50,074 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:50,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:50,286 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1795867972, now seen corresponding path program 2 times [2021-01-20 18:06:50,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:50,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329472649] [2021-01-20 18:06:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:50,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329472649] [2021-01-20 18:06:50,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445019658] [2021-01-20 18:06:50,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:50,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 18:06:50,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:50,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 18:06:50,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:50,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:50,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:50,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-20 18:06:50,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699197007] [2021-01-20 18:06:50,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 18:06:50,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:50,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 18:06:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:50,540 INFO L87 Difference]: Start difference. First operand 23707 states and 69231 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 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 18:06:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:50,966 INFO L93 Difference]: Finished difference Result 27163 states and 79343 transitions. [2021-01-20 18:06:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 18:06:50,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 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 51 [2021-01-20 18:06:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:50,968 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-01-20 18:06:50,968 INFO L78 Accepts]: Start accepts. Automaton has 27163 states and 79343 transitions. Word has length 51 [2021-01-20 18:06:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:50,970 INFO L481 AbstractCegarLoop]: Abstraction has 27163 states and 79343 transitions. [2021-01-20 18:06:50,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 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 18:06:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27163 states and 79343 transitions. [2021-01-20 18:06:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 18:06:51,000 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:51,000 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:51,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-20 18:06:51,214 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:51,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:51,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1129108430, now seen corresponding path program 3 times [2021-01-20 18:06:51,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:51,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499661909] [2021-01-20 18:06:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:51,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499661909] [2021-01-20 18:06:51,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732709393] [2021-01-20 18:06:51,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:51,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-20 18:06:51,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:51,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 18:06:51,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:51,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:06:51,585 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:51,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:51,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-20 18:06:51,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636452274] [2021-01-20 18:06:51,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 18:06:51,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:51,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 18:06:51,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-20 18:06:51,597 INFO L87 Difference]: Start difference. First operand 27163 states and 79343 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 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 18:06:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:52,231 INFO L93 Difference]: Finished difference Result 30875 states and 90159 transitions. [2021-01-20 18:06:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 18:06:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 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 51 [2021-01-20 18:06:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:52,233 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2021-01-20 18:06:52,233 INFO L78 Accepts]: Start accepts. Automaton has 30875 states and 90159 transitions. Word has length 51 [2021-01-20 18:06:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:52,233 INFO L481 AbstractCegarLoop]: Abstraction has 30875 states and 90159 transitions. [2021-01-20 18:06:52,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 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 18:06:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 30875 states and 90159 transitions. [2021-01-20 18:06:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 18:06:52,253 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:52,254 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:52,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:52,455 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:52,456 INFO L82 PathProgramCache]: Analyzing trace with hash -194830297, now seen corresponding path program 4 times [2021-01-20 18:06:52,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:52,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613923462] [2021-01-20 18:06:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:52,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613923462] [2021-01-20 18:06:52,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404638052] [2021-01-20 18:06:52,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:52,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 18:06:52,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:52,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:06:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:52,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:52,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:52,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:52,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-01-20 18:06:52,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353416263] [2021-01-20 18:06:52,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 18:06:52,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:52,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 18:06:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-20 18:06:52,876 INFO L87 Difference]: Start difference. First operand 30875 states and 90159 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 18:06:53,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:53,658 INFO L93 Difference]: Finished difference Result 36443 states and 106607 transitions. [2021-01-20 18:06:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 18:06:53,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 51 [2021-01-20 18:06:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:53,664 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-01-20 18:06:53,665 INFO L78 Accepts]: Start accepts. Automaton has 36443 states and 106607 transitions. Word has length 51 [2021-01-20 18:06:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:53,665 INFO L481 AbstractCegarLoop]: Abstraction has 36443 states and 106607 transitions. [2021-01-20 18:06:53,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 18:06:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 36443 states and 106607 transitions. [2021-01-20 18:06:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 18:06:53,706 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:53,706 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:53,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:53,916 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:53,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1043229613, now seen corresponding path program 5 times [2021-01-20 18:06:53,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:53,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616122195] [2021-01-20 18:06:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:54,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616122195] [2021-01-20 18:06:54,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102247496] [2021-01-20 18:06:54,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:54,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-01-20 18:06:54,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:54,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 18:06:54,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:54,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:54,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:54,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-01-20 18:06:54,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929288647] [2021-01-20 18:06:54,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 18:06:54,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:54,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 18:06:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:54,171 INFO L87 Difference]: Start difference. First operand 36443 states and 106607 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:54,675 INFO L93 Difference]: Finished difference Result 40155 states and 117487 transitions. [2021-01-20 18:06:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 18:06:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-01-20 18:06:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:54,676 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-01-20 18:06:54,676 INFO L78 Accepts]: Start accepts. Automaton has 40155 states and 117487 transitions. Word has length 56 [2021-01-20 18:06:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:54,677 INFO L481 AbstractCegarLoop]: Abstraction has 40155 states and 117487 transitions. [2021-01-20 18:06:54,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 40155 states and 117487 transitions. [2021-01-20 18:06:54,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 18:06:54,713 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:54,713 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:54,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 18:06:54,924 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1387222591, now seen corresponding path program 6 times [2021-01-20 18:06:54,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:54,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346036213] [2021-01-20 18:06:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:55,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346036213] [2021-01-20 18:06:55,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327651184] [2021-01-20 18:06:55,184 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:55,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-20 18:06:55,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:55,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 18:06:55,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:55,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:06:55,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:55,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:55,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-20 18:06:55,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379140164] [2021-01-20 18:06:55,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 18:06:55,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 18:06:55,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-20 18:06:55,364 INFO L87 Difference]: Start difference. First operand 40155 states and 117487 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:55,990 INFO L93 Difference]: Finished difference Result 43611 states and 127599 transitions. [2021-01-20 18:06:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 18:06:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-01-20 18:06:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:55,991 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-01-20 18:06:55,991 INFO L78 Accepts]: Start accepts. Automaton has 43611 states and 127599 transitions. Word has length 56 [2021-01-20 18:06:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:55,992 INFO L481 AbstractCegarLoop]: Abstraction has 43611 states and 127599 transitions. [2021-01-20 18:06:55,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 43611 states and 127599 transitions. [2021-01-20 18:06:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 18:06:56,029 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:56,030 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:56,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 18:06:56,231 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:56,232 INFO L82 PathProgramCache]: Analyzing trace with hash -23367961, now seen corresponding path program 7 times [2021-01-20 18:06:56,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:56,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672757246] [2021-01-20 18:06:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:56,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672757246] [2021-01-20 18:06:56,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526088736] [2021-01-20 18:06:56,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:56,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 18:06:56,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:56,588 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:56,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:56,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-01-20 18:06:56,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450106285] [2021-01-20 18:06:56,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 18:06:56,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:56,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 18:06:56,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-20 18:06:56,598 INFO L87 Difference]: Start difference. First operand 43611 states and 127599 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:57,204 INFO L93 Difference]: Finished difference Result 50523 states and 147823 transitions. [2021-01-20 18:06:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 18:06:57,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-01-20 18:06:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:57,206 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2021-01-20 18:06:57,206 INFO L78 Accepts]: Start accepts. Automaton has 50523 states and 147823 transitions. Word has length 56 [2021-01-20 18:06:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:57,206 INFO L481 AbstractCegarLoop]: Abstraction has 50523 states and 147823 transitions. [2021-01-20 18:06:57,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 50523 states and 147823 transitions. [2021-01-20 18:06:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 18:06:57,247 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:57,247 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:57,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-20 18:06:57,463 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash 701442583, now seen corresponding path program 8 times [2021-01-20 18:06:57,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:57,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373158315] [2021-01-20 18:06:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:57,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373158315] [2021-01-20 18:06:57,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240530088] [2021-01-20 18:06:57,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:57,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 18:06:57,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 18:06:57,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:57,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:06:57,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:06:57,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:57,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-20 18:06:57,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865655976] [2021-01-20 18:06:57,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 18:06:57,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:57,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 18:06:57,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-01-20 18:06:57,731 INFO L87 Difference]: Start difference. First operand 50523 states and 147823 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:06:58,668 INFO L93 Difference]: Finished difference Result 56779 states and 166087 transitions. [2021-01-20 18:06:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 18:06:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-01-20 18:06:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:06:58,670 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-01-20 18:06:58,670 INFO L78 Accepts]: Start accepts. Automaton has 56779 states and 166087 transitions. Word has length 56 [2021-01-20 18:06:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:06:58,670 INFO L481 AbstractCegarLoop]: Abstraction has 56779 states and 166087 transitions. [2021-01-20 18:06:58,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:06:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 56779 states and 166087 transitions. [2021-01-20 18:06:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 18:06:58,712 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:06:58,713 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:58,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-20 18:06:58,914 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:06:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:06:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1901571208, now seen corresponding path program 9 times [2021-01-20 18:06:58,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:06:58,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262241793] [2021-01-20 18:06:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:06:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:06:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:59,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262241793] [2021-01-20 18:06:59,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819918725] [2021-01-20 18:06:59,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:06:59,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 18:06:59,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:06:59,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:06:59,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:06:59,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:06:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:06:59,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:06:59,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-20 18:06:59,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809667127] [2021-01-20 18:06:59,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:06:59,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:06:59,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:06:59,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:06:59,200 INFO L87 Difference]: Start difference. First operand 56779 states and 166087 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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 18:07:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:00,222 INFO L93 Difference]: Finished difference Result 64203 states and 187975 transitions. [2021-01-20 18:07:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 18:07:00,223 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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 56 [2021-01-20 18:07:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:00,224 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 18:07:00,224 INFO L78 Accepts]: Start accepts. Automaton has 64203 states and 187975 transitions. Word has length 56 [2021-01-20 18:07:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:00,224 INFO L481 AbstractCegarLoop]: Abstraction has 64203 states and 187975 transitions. [2021-01-20 18:07:00,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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 18:07:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 64203 states and 187975 transitions. [2021-01-20 18:07:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 18:07:00,490 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:00,490 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:00,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 18:07:00,704 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash 674124083, now seen corresponding path program 10 times [2021-01-20 18:07:00,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:00,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271100952] [2021-01-20 18:07:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:00,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271100952] [2021-01-20 18:07:00,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784557441] [2021-01-20 18:07:00,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:00,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 18:07:00,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:00,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 18:07:00,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:00,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:00,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:00,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-20 18:07:00,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048691376] [2021-01-20 18:07:00,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 18:07:00,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:00,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 18:07:00,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-20 18:07:00,983 INFO L87 Difference]: Start difference. First operand 64203 states and 187975 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 18:07:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:01,673 INFO L93 Difference]: Finished difference Result 68043 states and 199239 transitions. [2021-01-20 18:07:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 18:07:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 61 [2021-01-20 18:07:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:01,674 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-01-20 18:07:01,674 INFO L78 Accepts]: Start accepts. Automaton has 68043 states and 199239 transitions. Word has length 61 [2021-01-20 18:07:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:01,674 INFO L481 AbstractCegarLoop]: Abstraction has 68043 states and 199239 transitions. [2021-01-20 18:07:01,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 18:07:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 68043 states and 199239 transitions. [2021-01-20 18:07:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 18:07:01,713 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:01,714 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:01,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:01,915 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash 330131105, now seen corresponding path program 11 times [2021-01-20 18:07:01,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:01,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757034799] [2021-01-20 18:07:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:02,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757034799] [2021-01-20 18:07:02,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659090565] [2021-01-20 18:07:02,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:02,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-20 18:07:02,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 18:07:02,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:02,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:02,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:02,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:02,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-20 18:07:02,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716735873] [2021-01-20 18:07:02,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 18:07:02,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:02,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 18:07:02,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-20 18:07:02,301 INFO L87 Difference]: Start difference. First operand 68043 states and 199239 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 18:07:02,827 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-20 18:07:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:03,343 INFO L93 Difference]: Finished difference Result 71371 states and 208967 transitions. [2021-01-20 18:07:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 18:07:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 61 [2021-01-20 18:07:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:03,344 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2021-01-20 18:07:03,345 INFO L78 Accepts]: Start accepts. Automaton has 71371 states and 208967 transitions. Word has length 61 [2021-01-20 18:07:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:03,345 INFO L481 AbstractCegarLoop]: Abstraction has 71371 states and 208967 transitions. [2021-01-20 18:07:03,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 18:07:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 71371 states and 208967 transitions. [2021-01-20 18:07:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 18:07:03,400 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:03,400 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:03,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:03,601 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:03,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1693985735, now seen corresponding path program 12 times [2021-01-20 18:07:03,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:03,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124630082] [2021-01-20 18:07:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:03,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124630082] [2021-01-20 18:07:03,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431967326] [2021-01-20 18:07:03,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:03,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-20 18:07:03,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:03,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 18:07:03,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:03,873 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:03,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:03,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-20 18:07:03,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61404083] [2021-01-20 18:07:03,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 18:07:03,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 18:07:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-20 18:07:03,891 INFO L87 Difference]: Start difference. First operand 71371 states and 208967 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 18:07:04,466 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-20 18:07:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:04,802 INFO L93 Difference]: Finished difference Result 77963 states and 228231 transitions. [2021-01-20 18:07:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 18:07:04,803 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 61 [2021-01-20 18:07:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:04,803 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-01-20 18:07:04,804 INFO L78 Accepts]: Start accepts. Automaton has 77963 states and 228231 transitions. Word has length 61 [2021-01-20 18:07:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:04,804 INFO L481 AbstractCegarLoop]: Abstraction has 77963 states and 228231 transitions. [2021-01-20 18:07:04,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 18:07:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 77963 states and 228231 transitions. [2021-01-20 18:07:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 18:07:04,859 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:04,859 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:05,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-20 18:07:05,061 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1876171017, now seen corresponding path program 13 times [2021-01-20 18:07:05,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:05,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279922065] [2021-01-20 18:07:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:05,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279922065] [2021-01-20 18:07:05,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229226348] [2021-01-20 18:07:05,196 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:05,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 18:07:05,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:05,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:05,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:05,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:05,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-20 18:07:05,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217471411] [2021-01-20 18:07:05,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 18:07:05,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 18:07:05,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-20 18:07:05,322 INFO L87 Difference]: Start difference. First operand 77963 states and 228231 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 18:07:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:06,519 INFO L93 Difference]: Finished difference Result 81675 states and 239047 transitions. [2021-01-20 18:07:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 18:07:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 61 [2021-01-20 18:07:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:06,520 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 18:07:06,520 INFO L78 Accepts]: Start accepts. Automaton has 81675 states and 239047 transitions. Word has length 61 [2021-01-20 18:07:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:06,521 INFO L481 AbstractCegarLoop]: Abstraction has 81675 states and 239047 transitions. [2021-01-20 18:07:06,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 18:07:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 81675 states and 239047 transitions. [2021-01-20 18:07:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 18:07:06,590 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:06,591 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:06,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:06,804 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:06,805 INFO L82 PathProgramCache]: Analyzing trace with hash -184217512, now seen corresponding path program 14 times [2021-01-20 18:07:06,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:06,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170028390] [2021-01-20 18:07:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:07:06,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170028390] [2021-01-20 18:07:06,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784412407] [2021-01-20 18:07:06,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:07,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 18:07:07,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:07,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 18:07:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:07,064 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:07:07,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:07,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-20 18:07:07,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515164772] [2021-01-20 18:07:07,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:07,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:07,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:07,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:07,077 INFO L87 Difference]: Start difference. First operand 81675 states and 239047 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 18:07:07,326 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2021-01-20 18:07:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:08,431 INFO L93 Difference]: Finished difference Result 87499 states and 256263 transitions. [2021-01-20 18:07:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 18:07:08,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 61 [2021-01-20 18:07:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:08,432 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=436, Invalid=1124, Unknown=0, NotChecked=0, Total=1560 [2021-01-20 18:07:08,433 INFO L78 Accepts]: Start accepts. Automaton has 87499 states and 256263 transitions. Word has length 61 [2021-01-20 18:07:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:08,433 INFO L481 AbstractCegarLoop]: Abstraction has 87499 states and 256263 transitions. [2021-01-20 18:07:08,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 18:07:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 87499 states and 256263 transitions. [2021-01-20 18:07:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:08,812 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:08,812 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:09,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-20 18:07:09,026 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash -446375550, now seen corresponding path program 15 times [2021-01-20 18:07:09,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:09,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681036890] [2021-01-20 18:07:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:09,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681036890] [2021-01-20 18:07:09,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183602416] [2021-01-20 18:07:09,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:09,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 18:07:09,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:09,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:07:09,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:09,328 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:09,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:09,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-20 18:07:09,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676529249] [2021-01-20 18:07:09,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:07:09,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:07:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:07:09,345 INFO L87 Difference]: Start difference. First operand 87499 states and 256263 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 18:07:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:10,091 INFO L93 Difference]: Finished difference Result 91339 states and 267527 transitions. [2021-01-20 18:07:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 18:07:10,092 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 66 [2021-01-20 18:07:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:10,093 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2021-01-20 18:07:10,093 INFO L78 Accepts]: Start accepts. Automaton has 91339 states and 267527 transitions. Word has length 66 [2021-01-20 18:07:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:10,093 INFO L481 AbstractCegarLoop]: Abstraction has 91339 states and 267527 transitions. [2021-01-20 18:07:10,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 18:07:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 91339 states and 267527 transitions. [2021-01-20 18:07:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:10,179 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:10,179 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:10,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-20 18:07:10,386 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2064809328, now seen corresponding path program 16 times [2021-01-20 18:07:10,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:10,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710446592] [2021-01-20 18:07:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:10,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710446592] [2021-01-20 18:07:10,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10451914] [2021-01-20 18:07:10,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:10,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 18:07:10,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:10,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:07:10,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:10,948 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:10,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:10,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:10,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-20 18:07:10,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186504282] [2021-01-20 18:07:10,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:10,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:10,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:10,994 INFO L87 Difference]: Start difference. First operand 91339 states and 267527 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 18:07:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:11,780 INFO L93 Difference]: Finished difference Result 95051 states and 278407 transitions. [2021-01-20 18:07:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 18:07:11,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 66 [2021-01-20 18:07:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:11,782 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 18:07:11,782 INFO L78 Accepts]: Start accepts. Automaton has 95051 states and 278407 transitions. Word has length 66 [2021-01-20 18:07:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:11,782 INFO L481 AbstractCegarLoop]: Abstraction has 95051 states and 278407 transitions. [2021-01-20 18:07:11,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 18:07:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 95051 states and 278407 transitions. [2021-01-20 18:07:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:11,853 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:11,854 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:12,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-20 18:07:12,064 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1331530518, now seen corresponding path program 17 times [2021-01-20 18:07:12,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:12,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468446121] [2021-01-20 18:07:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:12,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468446121] [2021-01-20 18:07:12,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484778489] [2021-01-20 18:07:12,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:12,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-20 18:07:12,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:07:12,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:12,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:12,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:12,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-20 18:07:12,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785928764] [2021-01-20 18:07:12,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:07:12,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:12,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:07:12,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:07:12,347 INFO L87 Difference]: Start difference. First operand 95051 states and 278407 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 18:07:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:13,412 INFO L93 Difference]: Finished difference Result 99019 states and 290055 transitions. [2021-01-20 18:07:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 18:07:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 66 [2021-01-20 18:07:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:13,413 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=769, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 18:07:13,413 INFO L78 Accepts]: Start accepts. Automaton has 99019 states and 290055 transitions. Word has length 66 [2021-01-20 18:07:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:13,414 INFO L481 AbstractCegarLoop]: Abstraction has 99019 states and 290055 transitions. [2021-01-20 18:07:13,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 18:07:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 99019 states and 290055 transitions. [2021-01-20 18:07:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:13,487 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:13,487 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:13,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-20 18:07:13,688 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:13,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1346701894, now seen corresponding path program 18 times [2021-01-20 18:07:13,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:13,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798482170] [2021-01-20 18:07:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:13,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798482170] [2021-01-20 18:07:13,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716736617] [2021-01-20 18:07:13,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:13,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-20 18:07:13,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:13,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:07:13,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:13,960 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:13,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:14,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:14,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-20 18:07:14,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124835617] [2021-01-20 18:07:14,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:14,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:14,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:14,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:14,006 INFO L87 Difference]: Start difference. First operand 99019 states and 290055 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 18:07:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:15,245 INFO L93 Difference]: Finished difference Result 106315 states and 311431 transitions. [2021-01-20 18:07:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 18:07:15,245 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 66 [2021-01-20 18:07:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:15,246 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 18:07:15,246 INFO L78 Accepts]: Start accepts. Automaton has 106315 states and 311431 transitions. Word has length 66 [2021-01-20 18:07:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:15,247 INFO L481 AbstractCegarLoop]: Abstraction has 106315 states and 311431 transitions. [2021-01-20 18:07:15,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 18:07:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 106315 states and 311431 transitions. [2021-01-20 18:07:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:15,319 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:15,319 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:15,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-20 18:07:15,520 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:15,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:15,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1492528600, now seen corresponding path program 19 times [2021-01-20 18:07:15,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:15,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894546194] [2021-01-20 18:07:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:15,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894546194] [2021-01-20 18:07:15,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030320121] [2021-01-20 18:07:15,670 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:15,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:07:15,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:15,771 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:15,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:15,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-20 18:07:15,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91003371] [2021-01-20 18:07:15,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:07:15,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:07:15,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:07:15,782 INFO L87 Difference]: Start difference. First operand 106315 states and 311431 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 18:07:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:17,130 INFO L93 Difference]: Finished difference Result 112907 states and 330695 transitions. [2021-01-20 18:07:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 18:07:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 66 [2021-01-20 18:07:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:17,132 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 18:07:17,132 INFO L78 Accepts]: Start accepts. Automaton has 112907 states and 330695 transitions. Word has length 66 [2021-01-20 18:07:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:17,133 INFO L481 AbstractCegarLoop]: Abstraction has 112907 states and 330695 transitions. [2021-01-20 18:07:17,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 18:07:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 112907 states and 330695 transitions. [2021-01-20 18:07:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:17,230 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:17,230 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:17,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:17,431 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:17,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:17,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2077628152, now seen corresponding path program 20 times [2021-01-20 18:07:17,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:17,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389363573] [2021-01-20 18:07:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:17,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389363573] [2021-01-20 18:07:17,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006645030] [2021-01-20 18:07:17,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:17,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 18:07:17,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:17,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 18:07:17,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:17,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:17,731 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:17,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:17,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-20 18:07:17,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263630918] [2021-01-20 18:07:17,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:17,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:17,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:17,746 INFO L87 Difference]: Start difference. First operand 112907 states and 330695 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 18:07:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:19,252 INFO L93 Difference]: Finished difference Result 116619 states and 341511 transitions. [2021-01-20 18:07:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 18:07:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 66 [2021-01-20 18:07:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:19,253 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 18:07:19,254 INFO L78 Accepts]: Start accepts. Automaton has 116619 states and 341511 transitions. Word has length 66 [2021-01-20 18:07:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:19,254 INFO L481 AbstractCegarLoop]: Abstraction has 116619 states and 341511 transitions. [2021-01-20 18:07:19,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 18:07:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 116619 states and 341511 transitions. [2021-01-20 18:07:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 18:07:19,332 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:19,333 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:19,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-20 18:07:19,533 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash -385674647, now seen corresponding path program 21 times [2021-01-20 18:07:19,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:19,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608546985] [2021-01-20 18:07:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:07:19,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608546985] [2021-01-20 18:07:19,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324434847] [2021-01-20 18:07:19,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:19,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 18:07:19,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:19,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 18:07:19,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:19,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:07:19,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:19,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 18:07:19,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458977531] [2021-01-20 18:07:19,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 18:07:19,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 18:07:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-01-20 18:07:19,813 INFO L87 Difference]: Start difference. First operand 116619 states and 341511 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 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 18:07:21,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:21,451 INFO L93 Difference]: Finished difference Result 124363 states and 364487 transitions. [2021-01-20 18:07:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 18:07:21,452 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 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 66 [2021-01-20 18:07:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:21,453 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=504, Invalid=1388, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 18:07:21,453 INFO L78 Accepts]: Start accepts. Automaton has 124363 states and 364487 transitions. Word has length 66 [2021-01-20 18:07:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:21,454 INFO L481 AbstractCegarLoop]: Abstraction has 124363 states and 364487 transitions. [2021-01-20 18:07:21,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 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 18:07:21,454 INFO L276 IsEmpty]: Start isEmpty. Operand 124363 states and 364487 transitions. [2021-01-20 18:07:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:21,546 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:21,546 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:21,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:21,747 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1143144034, now seen corresponding path program 22 times [2021-01-20 18:07:21,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:21,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102183462] [2021-01-20 18:07:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:21,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102183462] [2021-01-20 18:07:21,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941975495] [2021-01-20 18:07:21,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:22,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 18:07:22,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 18:07:22,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:22,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:22,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:22,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-20 18:07:22,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961715999] [2021-01-20 18:07:22,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:07:22,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:22,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:07:22,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:07:22,073 INFO L87 Difference]: Start difference. First operand 124363 states and 364487 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 18:07:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:23,253 INFO L93 Difference]: Finished difference Result 128715 states and 377287 transitions. [2021-01-20 18:07:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 18:07:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 71 [2021-01-20 18:07:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:23,254 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-01-20 18:07:23,254 INFO L78 Accepts]: Start accepts. Automaton has 128715 states and 377287 transitions. Word has length 71 [2021-01-20 18:07:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:23,255 INFO L481 AbstractCegarLoop]: Abstraction has 128715 states and 377287 transitions. [2021-01-20 18:07:23,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 18:07:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 128715 states and 377287 transitions. [2021-01-20 18:07:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:23,355 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:23,355 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:23,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-20 18:07:23,564 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:23,565 INFO L82 PathProgramCache]: Analyzing trace with hash -640638384, now seen corresponding path program 23 times [2021-01-20 18:07:23,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:23,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011776599] [2021-01-20 18:07:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011776599] [2021-01-20 18:07:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941624270] [2021-01-20 18:07:23,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:23,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 18:07:23,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:23,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 18:07:23,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:23,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:23,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:23,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:23,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 18:07:23,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762939402] [2021-01-20 18:07:23,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:23,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:23,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:23,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:23,879 INFO L87 Difference]: Start difference. First operand 128715 states and 377287 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:07:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:25,345 INFO L93 Difference]: Finished difference Result 132299 states and 387783 transitions. [2021-01-20 18:07:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 18:07:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 71 [2021-01-20 18:07:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:25,347 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=959, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 18:07:25,347 INFO L78 Accepts]: Start accepts. Automaton has 132299 states and 387783 transitions. Word has length 71 [2021-01-20 18:07:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:25,348 INFO L481 AbstractCegarLoop]: Abstraction has 132299 states and 387783 transitions. [2021-01-20 18:07:25,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:07:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 132299 states and 387783 transitions. [2021-01-20 18:07:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:25,477 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:25,477 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:25,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:25,678 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:25,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1373917194, now seen corresponding path program 24 times [2021-01-20 18:07:25,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:25,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498948557] [2021-01-20 18:07:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:25,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498948557] [2021-01-20 18:07:25,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576116460] [2021-01-20 18:07:25,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:25,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-20 18:07:25,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:25,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 18:07:25,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:25,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:25,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:25,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-20 18:07:25,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419102224] [2021-01-20 18:07:25,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:07:25,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:07:25,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:07:25,969 INFO L87 Difference]: Start difference. First operand 132299 states and 387783 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 18:07:27,258 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-01-20 18:07:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:27,493 INFO L93 Difference]: Finished difference Result 136139 states and 399047 transitions. [2021-01-20 18:07:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 18:07:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 71 [2021-01-20 18:07:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:27,495 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=313, Invalid=809, Unknown=0, NotChecked=0, Total=1122 [2021-01-20 18:07:27,495 INFO L78 Accepts]: Start accepts. Automaton has 136139 states and 399047 transitions. Word has length 71 [2021-01-20 18:07:27,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:27,495 INFO L481 AbstractCegarLoop]: Abstraction has 136139 states and 399047 transitions. [2021-01-20 18:07:27,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 18:07:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 136139 states and 399047 transitions. [2021-01-20 18:07:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:27,593 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:27,593 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:27,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-20 18:07:27,794 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:27,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1358745818, now seen corresponding path program 25 times [2021-01-20 18:07:27,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:27,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003132249] [2021-01-20 18:07:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:27,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003132249] [2021-01-20 18:07:27,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999527582] [2021-01-20 18:07:27,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:28,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 18:07:28,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:28,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 18:07:28,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:28,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:28,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 18:07:28,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040191800] [2021-01-20 18:07:28,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:28,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:28,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:28,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:28,087 INFO L87 Difference]: Start difference. First operand 136139 states and 399047 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:07:29,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:29,816 INFO L93 Difference]: Finished difference Result 139467 states and 408775 transitions. [2021-01-20 18:07:29,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 18:07:29,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 71 [2021-01-20 18:07:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:29,817 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=1076, Unknown=0, NotChecked=0, Total=1482 [2021-01-20 18:07:29,818 INFO L78 Accepts]: Start accepts. Automaton has 139467 states and 408775 transitions. Word has length 71 [2021-01-20 18:07:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:29,818 INFO L481 AbstractCegarLoop]: Abstraction has 139467 states and 408775 transitions. [2021-01-20 18:07:29,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:07:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 139467 states and 408775 transitions. [2021-01-20 18:07:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:29,928 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:29,928 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:30,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:30,135 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:30,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1212919112, now seen corresponding path program 26 times [2021-01-20 18:07:30,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:30,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047185555] [2021-01-20 18:07:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:30,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047185555] [2021-01-20 18:07:30,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278800917] [2021-01-20 18:07:30,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:30,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 18:07:30,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:30,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 18:07:30,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:30,398 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:30,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:30,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-20 18:07:30,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526250134] [2021-01-20 18:07:30,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 18:07:30,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 18:07:30,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-20 18:07:30,418 INFO L87 Difference]: Start difference. First operand 139467 states and 408775 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 18:07:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:32,024 INFO L93 Difference]: Finished difference Result 146059 states and 428039 transitions. [2021-01-20 18:07:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 18:07:32,025 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 71 [2021-01-20 18:07:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:32,025 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 18:07:32,025 INFO L78 Accepts]: Start accepts. Automaton has 146059 states and 428039 transitions. Word has length 71 [2021-01-20 18:07:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:32,026 INFO L481 AbstractCegarLoop]: Abstraction has 146059 states and 428039 transitions. [2021-01-20 18:07:32,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 18:07:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 146059 states and 428039 transitions. [2021-01-20 18:07:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:32,196 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:32,196 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:32,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-20 18:07:32,411 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash -488108568, now seen corresponding path program 27 times [2021-01-20 18:07:32,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:32,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089369588] [2021-01-20 18:07:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089369588] [2021-01-20 18:07:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934939958] [2021-01-20 18:07:32,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:32,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 18:07:32,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:32,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 18:07:32,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:32,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 18:07:32,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:32,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 18:07:32,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844706912] [2021-01-20 18:07:32,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 18:07:32,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:32,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 18:07:32,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-20 18:07:32,706 INFO L87 Difference]: Start difference. First operand 146059 states and 428039 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:07:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:34,553 INFO L93 Difference]: Finished difference Result 149771 states and 438855 transitions. [2021-01-20 18:07:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 18:07:34,553 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 71 [2021-01-20 18:07:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:34,554 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=1036, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 18:07:34,554 INFO L78 Accepts]: Start accepts. Automaton has 149771 states and 438855 transitions. Word has length 71 [2021-01-20 18:07:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:34,555 INFO L481 AbstractCegarLoop]: Abstraction has 149771 states and 438855 transitions. [2021-01-20 18:07:34,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:07:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 149771 states and 438855 transitions. [2021-01-20 18:07:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 18:07:34,702 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:34,702 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:34,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:34,917 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:34,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1203844937, now seen corresponding path program 28 times [2021-01-20 18:07:34,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:34,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533991418] [2021-01-20 18:07:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:07:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:07:35,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533991418] [2021-01-20 18:07:35,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054212288] [2021-01-20 18:07:35,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 18:07:35,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 18:07:35,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 18:07:35,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 18:07:35,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 18:07:35,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:35,239 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 18:07:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:07:35,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 18:07:35,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-20 18:07:35,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390897174] [2021-01-20 18:07:35,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 18:07:35,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:07:35,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 18:07:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-01-20 18:07:35,251 INFO L87 Difference]: Start difference. First operand 149771 states and 438855 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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 18:07:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:07:37,346 INFO L93 Difference]: Finished difference Result 151819 states and 444871 transitions. [2021-01-20 18:07:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 18:07:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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 71 [2021-01-20 18:07:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:07:37,347 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=529, Invalid=1111, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 18:07:37,347 INFO L78 Accepts]: Start accepts. Automaton has 151819 states and 444871 transitions. Word has length 71 [2021-01-20 18:07:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:07:37,347 INFO L481 AbstractCegarLoop]: Abstraction has 151819 states and 444871 transitions. [2021-01-20 18:07:37,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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 18:07:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 151819 states and 444871 transitions. [2021-01-20 18:07:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 18:07:37,472 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:07:37,472 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:37,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-20 18:07:37,673 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:07:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:07:37,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1682215820, now seen corresponding path program 29 times [2021-01-20 18:07:37,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:07:37,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559245264] [2021-01-20 18:07:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:07:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-20 18:07:37,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-20 18:07:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-20 18:07:37,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-20 18:07:37,756 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-20 18:07:37,756 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-01-20 18:07:37,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-01-20 18:07:37,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 06:07:37 BasicIcfg [2021-01-20 18:07:37,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 18:07:37,888 INFO L168 Benchmark]: Toolchain (without parser) took 56318.69 ms. Allocated memory was 302.0 MB in the beginning and 12.8 GB in the end (delta: 12.5 GB). Free memory was 277.4 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 2.9 GB. Max. memory is 16.0 GB. [2021-01-20 18:07:37,888 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 271.8 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 18:07:37,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.10 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 248.5 MB in the end (delta: 28.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-20 18:07:37,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.78 ms. Allocated memory is still 302.0 MB. Free memory was 248.5 MB in the beginning and 246.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 18:07:37,891 INFO L168 Benchmark]: Boogie Preprocessor took 60.61 ms. Allocated memory is still 302.0 MB. Free memory was 246.5 MB in the beginning and 245.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 18:07:37,892 INFO L168 Benchmark]: RCFGBuilder took 517.75 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 267.4 MB in the end (delta: -22.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-01-20 18:07:37,892 INFO L168 Benchmark]: TraceAbstraction took 54924.69 ms. Allocated memory was 302.0 MB in the beginning and 12.8 GB in the end (delta: 12.5 GB). Free memory was 266.4 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 2.9 GB. Max. memory is 16.0 GB. [2021-01-20 18:07:37,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 271.8 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 726.10 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 248.5 MB in the end (delta: 28.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 78.78 ms. Allocated memory is still 302.0 MB. Free memory was 248.5 MB in the beginning and 246.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.61 ms. Allocated memory is still 302.0 MB. Free memory was 246.5 MB in the beginning and 245.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 517.75 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 267.4 MB in the end (delta: -22.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 54924.69 ms. Allocated memory was 302.0 MB in the beginning and 12.8 GB in the end (delta: 12.5 GB). Free memory was 266.4 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 2.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [i=3, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2, k++=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2, k++=1] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3, k++=2] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3, k++=2] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4, k++=3] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4, k++=3] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.6s, OverallIterations: 38, TraceHistogramMax: 5, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 4553 SDtfs, 25288 SDslu, 25185 SDs, 0 SdLazy, 4517 SolverSat, 1354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2847 GetRequests, 1861 SyntacticMatches, 26 SemanticMatches, 960 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7049 ImplicationChecksByTransitivity, 18.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151819occurred in iteration=37, 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: 0.6s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 4028 NumberOfCodeBlocks, 4028 NumberOfCodeBlocksAsserted, 120 NumberOfCheckSat, 3884 ConstructedInterpolants, 0 QuantifiedInterpolants, 884530 SizeOfPredicates, 287 NumberOfNonLiveVariables, 4440 ConjunctsInSsa, 393 ConjunctsInUnsatCore, 68 InterpolantComputations, 6 PerfectInterpolantSequences, 48/2108 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 incorrect! Received shutdown request...