/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/fib_bench_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 20:23:49,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 20:23:49,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 20:23:49,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 20:23:49,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 20:23:49,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 20:23:49,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 20:23:49,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 20:23:49,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 20:23:49,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 20:23:49,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 20:23:49,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 20:23:49,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 20:23:49,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 20:23:49,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 20:23:49,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 20:23:49,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 20:23:49,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 20:23:49,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 20:23:49,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 20:23:49,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 20:23:49,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 20:23:49,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 20:23:49,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 20:23:49,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-17 20:23:49,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-17 20:23:49,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-17 20:23:49,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-17 20:23:49,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-17 20:23:49,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-17 20:23:49,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 20:23:49,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 20:23:49,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 20:23:49,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 20:23:49,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 20:23:49,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 20:23:49,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 20:23:49,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 20:23:49,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 20:23:49,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 20:23:49,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 20:23:49,822 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 [2020-12-17 20:23:49,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 20:23:49,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 20:23:49,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 20:23:49,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 20:23:49,884 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 20:23:49,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 20:23:49,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 20:23:49,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 20:23:49,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 20:23:49,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 20:23:49,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 20:23:49,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 20:23:49,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 20:23:49,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 20:23:49,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 20:23:49,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 20:23:49,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 20:23:49,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 20:23:49,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 20:23:49,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 20:23:49,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 20:23:49,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 20:23:49,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 20:23:49,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 20:23:49,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 20:23:49,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 20:23:49,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 20:23:49,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 20:23:49,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 20:23:49,892 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 20:23:49,893 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 20:23:49,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 20:23:50,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 20:23:50,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 20:23:50,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 20:23:50,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 20:23:50,411 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 20:23:50,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-12-17 20:23:50,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15f8ea990/61e67778aa5b4f0c9b530e50651fae37/FLAG82e01be26 [2020-12-17 20:23:51,240 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 20:23:51,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-12-17 20:23:51,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15f8ea990/61e67778aa5b4f0c9b530e50651fae37/FLAG82e01be26 [2020-12-17 20:23:51,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15f8ea990/61e67778aa5b4f0c9b530e50651fae37 [2020-12-17 20:23:51,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 20:23:51,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 20:23:51,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 20:23:51,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 20:23:51,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 20:23:51,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:23:51" (1/1) ... [2020-12-17 20:23:51,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76be7753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:51, skipping insertion in model container [2020-12-17 20:23:51,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:23:51" (1/1) ... [2020-12-17 20:23:51,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 20:23:51,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 20:23:51,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 20:23:51,969 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 20:23:52,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 20:23:52,144 INFO L208 MainTranslator]: Completed translation [2020-12-17 20:23:52,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52 WrapperNode [2020-12-17 20:23:52,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 20:23:52,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 20:23:52,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 20:23:52,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 20:23:52,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 20:23:52,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 20:23:52,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 20:23:52,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 20:23:52,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 20:23:52,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 20:23:52,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 20:23:52,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 20:23:52,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (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 [2020-12-17 20:23:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-12-17 20:23:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-12-17 20:23:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-12-17 20:23:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-12-17 20:23:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 20:23:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 20:23:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 20:23:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 20:23:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 20:23:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 20:23:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 20:23:52,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 20:23:52,329 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 20:23:52,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 20:23:52,876 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-17 20:23:52,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:23:52 BoogieIcfgContainer [2020-12-17 20:23:52,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 20:23:52,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 20:23:52,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 20:23:52,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 20:23:52,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:23:51" (1/3) ... [2020-12-17 20:23:52,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7121a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:23:52, skipping insertion in model container [2020-12-17 20:23:52,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52" (2/3) ... [2020-12-17 20:23:52,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7121a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:23:52, skipping insertion in model container [2020-12-17 20:23:52,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:23:52" (3/3) ... [2020-12-17 20:23:52,888 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2020-12-17 20:23:52,905 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 20:23:52,905 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 20:23:52,913 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 20:23:52,914 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 20:23:52,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,955 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,957 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,957 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,958 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,958 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,959 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,959 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,960 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,960 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,962 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,962 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,962 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,962 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,963 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,963 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,964 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,964 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,966 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,966 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,966 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,967 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,967 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,968 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,969 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,969 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,971 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,972 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,973 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,973 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,974 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,974 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,980 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,980 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,981 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,981 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,981 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,981 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,988 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,988 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,989 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:52,997 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 20:23:53,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-17 20:23:53,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 20:23:53,052 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 20:23:53,052 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 20:23:53,052 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 20:23:53,052 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 20:23:53,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 20:23:53,054 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 20:23:53,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 20:23:53,071 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 66 transitions, 142 flow [2020-12-17 20:23:53,226 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2229 states, 2227 states have (on average 3.205208801077683) internal successors, (7138), 2228 states have internal predecessors, (7138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 2229 states, 2227 states have (on average 3.205208801077683) internal successors, (7138), 2228 states have internal predecessors, (7138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-17 20:23:53,252 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:53,254 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] [2020-12-17 20:23:53,254 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:53,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2143390317, now seen corresponding path program 1 times [2020-12-17 20:23:53,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:53,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990161530] [2020-12-17 20:23:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:53,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990161530] [2020-12-17 20:23:53,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:53,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 20:23:53,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803896002] [2020-12-17 20:23:53,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 20:23:53,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:53,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 20:23:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-17 20:23:53,761 INFO L87 Difference]: Start difference. First operand has 2229 states, 2227 states have (on average 3.205208801077683) internal successors, (7138), 2228 states have internal predecessors, (7138), 0 states have call successors, (0), 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) [2020-12-17 20:23:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:53,990 INFO L93 Difference]: Finished difference Result 4034 states and 11738 transitions. [2020-12-17 20:23:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 20:23:53,992 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 [2020-12-17 20:23:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:53,995 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-12-17 20:23:53,995 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 11738 transitions. Word has length 28 [2020-12-17 20:23:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:53,996 INFO L481 AbstractCegarLoop]: Abstraction has 4034 states and 11738 transitions. [2020-12-17 20:23:53,997 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) [2020-12-17 20:23:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 11738 transitions. [2020-12-17 20:23:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-17 20:23:54,008 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:54,008 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] [2020-12-17 20:23:54,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 20:23:54,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash 409143693, now seen corresponding path program 1 times [2020-12-17 20:23:54,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:54,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035765911] [2020-12-17 20:23:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:54,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035765911] [2020-12-17 20:23:54,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:54,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 20:23:54,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995079428] [2020-12-17 20:23:54,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 20:23:54,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:54,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 20:23:54,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-17 20:23:54,296 INFO L87 Difference]: Start difference. First operand 4034 states and 11738 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:54,555 INFO L93 Difference]: Finished difference Result 5570 states and 16218 transitions. [2020-12-17 20:23:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-17 20:23:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2020-12-17 20:23:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:54,558 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-17 20:23:54,559 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 16218 transitions. Word has length 33 [2020-12-17 20:23:54,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:54,560 INFO L481 AbstractCegarLoop]: Abstraction has 5570 states and 16218 transitions. [2020-12-17 20:23:54,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 16218 transitions. [2020-12-17 20:23:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-17 20:23:54,566 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:54,567 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] [2020-12-17 20:23:54,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 20:23:54,567 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:54,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1822434001, now seen corresponding path program 2 times [2020-12-17 20:23:54,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:54,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140247791] [2020-12-17 20:23:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:54,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140247791] [2020-12-17 20:23:54,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:54,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 20:23:54,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407505981] [2020-12-17 20:23:54,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 20:23:54,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:54,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 20:23:54,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-17 20:23:54,767 INFO L87 Difference]: Start difference. First operand 5570 states and 16218 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:55,041 INFO L93 Difference]: Finished difference Result 7106 states and 20698 transitions. [2020-12-17 20:23:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 20:23:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2020-12-17 20:23:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:55,042 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-17 20:23:55,042 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 20698 transitions. Word has length 33 [2020-12-17 20:23:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:55,043 INFO L481 AbstractCegarLoop]: Abstraction has 7106 states and 20698 transitions. [2020-12-17 20:23:55,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 20698 transitions. [2020-12-17 20:23:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-17 20:23:55,047 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:55,047 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] [2020-12-17 20:23:55,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 20:23:55,048 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash 26886563, now seen corresponding path program 1 times [2020-12-17 20:23:55,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:55,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634349331] [2020-12-17 20:23:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634349331] [2020-12-17 20:23:55,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:55,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 20:23:55,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600570140] [2020-12-17 20:23:55,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 20:23:55,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 20:23:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-17 20:23:55,184 INFO L87 Difference]: Start difference. First operand 7106 states and 20698 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:55,405 INFO L93 Difference]: Finished difference Result 9242 states and 26890 transitions. [2020-12-17 20:23:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 20:23:55,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2020-12-17 20:23:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:55,407 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-17 20:23:55,407 INFO L78 Accepts]: Start accepts. Automaton has 9242 states and 26890 transitions. Word has length 33 [2020-12-17 20:23:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:55,408 INFO L481 AbstractCegarLoop]: Abstraction has 9242 states and 26890 transitions. [2020-12-17 20:23:55,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 9242 states and 26890 transitions. [2020-12-17 20:23:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-17 20:23:55,418 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:55,418 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 20:23:55,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 20:23:55,418 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:55,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1836185505, now seen corresponding path program 1 times [2020-12-17 20:23:55,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:55,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123161995] [2020-12-17 20:23:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:55,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123161995] [2020-12-17 20:23:55,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:55,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 20:23:55,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881509994] [2020-12-17 20:23:55,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 20:23:55,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:55,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 20:23:55,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-17 20:23:55,561 INFO L87 Difference]: Start difference. First operand 9242 states and 26890 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:55,785 INFO L93 Difference]: Finished difference Result 10010 states and 29130 transitions. [2020-12-17 20:23:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-17 20:23:55,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2020-12-17 20:23:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:55,787 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-17 20:23:55,787 INFO L78 Accepts]: Start accepts. Automaton has 10010 states and 29130 transitions. Word has length 38 [2020-12-17 20:23:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:55,788 INFO L481 AbstractCegarLoop]: Abstraction has 10010 states and 29130 transitions. [2020-12-17 20:23:55,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states and 29130 transitions. [2020-12-17 20:23:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-17 20:23:55,797 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:55,798 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 20:23:55,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 20:23:55,798 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash 703073151, now seen corresponding path program 2 times [2020-12-17 20:23:55,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:55,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947082656] [2020-12-17 20:23:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:55,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947082656] [2020-12-17 20:23:55,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:55,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 20:23:55,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457289209] [2020-12-17 20:23:55,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 20:23:55,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:55,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 20:23:55,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-17 20:23:55,932 INFO L87 Difference]: Start difference. First operand 10010 states and 29130 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:56,339 INFO L93 Difference]: Finished difference Result 12826 states and 37322 transitions. [2020-12-17 20:23:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 20:23:56,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2020-12-17 20:23:56,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:56,341 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:23:56,341 INFO L78 Accepts]: Start accepts. Automaton has 12826 states and 37322 transitions. Word has length 38 [2020-12-17 20:23:56,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:56,341 INFO L481 AbstractCegarLoop]: Abstraction has 12826 states and 37322 transitions. [2020-12-17 20:23:56,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 12826 states and 37322 transitions. [2020-12-17 20:23:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-17 20:23:56,351 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:56,351 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 20:23:56,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 20:23:56,352 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash -127797699, now seen corresponding path program 3 times [2020-12-17 20:23:56,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:56,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554394418] [2020-12-17 20:23:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:56,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554394418] [2020-12-17 20:23:56,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:56,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 20:23:56,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139841488] [2020-12-17 20:23:56,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 20:23:56,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 20:23:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-17 20:23:56,481 INFO L87 Difference]: Start difference. First operand 12826 states and 37322 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:56,878 INFO L93 Difference]: Finished difference Result 16962 states and 49338 transitions. [2020-12-17 20:23:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-17 20:23:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2020-12-17 20:23:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:56,880 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-12-17 20:23:56,880 INFO L78 Accepts]: Start accepts. Automaton has 16962 states and 49338 transitions. Word has length 38 [2020-12-17 20:23:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:56,880 INFO L481 AbstractCegarLoop]: Abstraction has 16962 states and 49338 transitions. [2020-12-17 20:23:56,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 16962 states and 49338 transitions. [2020-12-17 20:23:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-17 20:23:56,891 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:56,891 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] [2020-12-17 20:23:56,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 20:23:56,891 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:56,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2059823446, now seen corresponding path program 1 times [2020-12-17 20:23:56,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:56,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529051326] [2020-12-17 20:23:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:57,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529051326] [2020-12-17 20:23:57,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193736752] [2020-12-17 20:23:57,047 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 [2020-12-17 20:23:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:57,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-17 20:23:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:57,486 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:23:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:57,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:57,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-17 20:23:57,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234517918] [2020-12-17 20:23:57,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 20:23:57,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:57,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 20:23:57,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-17 20:23:57,500 INFO L87 Difference]: Start difference. First operand 16962 states and 49338 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2020-12-17 20:23:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:57,876 INFO L93 Difference]: Finished difference Result 18626 states and 54202 transitions. [2020-12-17 20:23:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-17 20:23:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 38 [2020-12-17 20:23:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:57,879 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:23:57,879 INFO L78 Accepts]: Start accepts. Automaton has 18626 states and 54202 transitions. Word has length 38 [2020-12-17 20:23:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:57,879 INFO L481 AbstractCegarLoop]: Abstraction has 18626 states and 54202 transitions. [2020-12-17 20:23:57,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2020-12-17 20:23:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18626 states and 54202 transitions. [2020-12-17 20:23:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-17 20:23:57,890 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:57,890 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] [2020-12-17 20:23:58,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-17 20:23:58,106 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash -364831632, now seen corresponding path program 2 times [2020-12-17 20:23:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:58,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651769038] [2020-12-17 20:23:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:58,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651769038] [2020-12-17 20:23:58,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47623575] [2020-12-17 20:23:58,263 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 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 [2020-12-17 20:23:58,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:23:58,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:58,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-17 20:23:58,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:58,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:23:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:58,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:58,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-17 20:23:58,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138494432] [2020-12-17 20:23:58,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 20:23:58,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 20:23:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-17 20:23:58,493 INFO L87 Difference]: Start difference. First operand 18626 states and 54202 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2020-12-17 20:23:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:58,923 INFO L93 Difference]: Finished difference Result 20162 states and 58682 transitions. [2020-12-17 20:23:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-17 20:23:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 38 [2020-12-17 20:23:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:58,925 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-12-17 20:23:58,925 INFO L78 Accepts]: Start accepts. Automaton has 20162 states and 58682 transitions. Word has length 38 [2020-12-17 20:23:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:58,925 INFO L481 AbstractCegarLoop]: Abstraction has 20162 states and 58682 transitions. [2020-12-17 20:23:58,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2020-12-17 20:23:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 20162 states and 58682 transitions. [2020-12-17 20:23:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-17 20:23:58,939 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:58,939 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] [2020-12-17 20:23:59,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:23:59,154 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:23:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1048458676, now seen corresponding path program 3 times [2020-12-17 20:23:59,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:59,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371606024] [2020-12-17 20:23:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:59,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371606024] [2020-12-17 20:23:59,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832530528] [2020-12-17 20:23:59,256 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 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 [2020-12-17 20:23:59,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-17 20:23:59,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:59,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-17 20:23:59,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:59,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:23:59,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:23:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:23:59,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:59,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-17 20:23:59,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185908225] [2020-12-17 20:23:59,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 20:23:59,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:59,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 20:23:59,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-17 20:23:59,555 INFO L87 Difference]: Start difference. First operand 20162 states and 58682 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2020-12-17 20:24:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:00,029 INFO L93 Difference]: Finished difference Result 21698 states and 63162 transitions. [2020-12-17 20:24:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 20:24:00,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 38 [2020-12-17 20:24:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:00,031 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-17 20:24:00,031 INFO L78 Accepts]: Start accepts. Automaton has 21698 states and 63162 transitions. Word has length 38 [2020-12-17 20:24:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:00,031 INFO L481 AbstractCegarLoop]: Abstraction has 21698 states and 63162 transitions. [2020-12-17 20:24:00,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2020-12-17 20:24:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 21698 states and 63162 transitions. [2020-12-17 20:24:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 20:24:00,050 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:00,051 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, 1, 1] [2020-12-17 20:24:00,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-17 20:24:00,265 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1809094268, now seen corresponding path program 1 times [2020-12-17 20:24:00,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:00,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834163803] [2020-12-17 20:24:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:00,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834163803] [2020-12-17 20:24:00,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533155763] [2020-12-17 20:24:00,459 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 [2020-12-17 20:24:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:00,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 20:24:00,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:00,659 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:00,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:00,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-12-17 20:24:00,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431390344] [2020-12-17 20:24:00,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 20:24:00,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:00,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 20:24:00,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-17 20:24:00,676 INFO L87 Difference]: Start difference. First operand 21698 states and 63162 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:01,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:01,127 INFO L93 Difference]: Finished difference Result 23490 states and 68410 transitions. [2020-12-17 20:24:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-17 20:24:01,127 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 20:24:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:01,128 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2020-12-17 20:24:01,128 INFO L78 Accepts]: Start accepts. Automaton has 23490 states and 68410 transitions. Word has length 43 [2020-12-17 20:24:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:01,129 INFO L481 AbstractCegarLoop]: Abstraction has 23490 states and 68410 transitions. [2020-12-17 20:24:01,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 23490 states and 68410 transitions. [2020-12-17 20:24:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 20:24:01,148 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:01,148 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, 1, 1] [2020-12-17 20:24:01,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:01,362 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:01,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1432941800, now seen corresponding path program 2 times [2020-12-17 20:24:01,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:01,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803998211] [2020-12-17 20:24:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:01,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803998211] [2020-12-17 20:24:01,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820828553] [2020-12-17 20:24:01,535 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 [2020-12-17 20:24:01,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:01,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:01,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 20:24:01,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:01,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:01,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:01,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-12-17 20:24:01,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860631805] [2020-12-17 20:24:01,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 20:24:01,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:01,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 20:24:01,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-12-17 20:24:01,791 INFO L87 Difference]: Start difference. First operand 23490 states and 68410 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:01,927 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-17 20:24:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:02,514 INFO L93 Difference]: Finished difference Result 24322 states and 70842 transitions. [2020-12-17 20:24:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 20:24:02,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 20:24:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:02,516 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-12-17 20:24:02,516 INFO L78 Accepts]: Start accepts. Automaton has 24322 states and 70842 transitions. Word has length 43 [2020-12-17 20:24:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:02,517 INFO L481 AbstractCegarLoop]: Abstraction has 24322 states and 70842 transitions. [2020-12-17 20:24:02,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 24322 states and 70842 transitions. [2020-12-17 20:24:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 20:24:02,538 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:02,539 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, 1, 1] [2020-12-17 20:24:02,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-17 20:24:02,752 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1083428478, now seen corresponding path program 3 times [2020-12-17 20:24:02,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:02,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844288679] [2020-12-17 20:24:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:02,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844288679] [2020-12-17 20:24:02,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766458258] [2020-12-17 20:24:02,981 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 [2020-12-17 20:24:03,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-17 20:24:03,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:03,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 20:24:03,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:03,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:03,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:03,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-12-17 20:24:03,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15963435] [2020-12-17 20:24:03,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 20:24:03,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:03,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 20:24:03,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-12-17 20:24:03,183 INFO L87 Difference]: Start difference. First operand 24322 states and 70842 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:03,763 INFO L93 Difference]: Finished difference Result 25986 states and 75706 transitions. [2020-12-17 20:24:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 20:24:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 20:24:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:03,766 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-12-17 20:24:03,766 INFO L78 Accepts]: Start accepts. Automaton has 25986 states and 75706 transitions. Word has length 43 [2020-12-17 20:24:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:03,766 INFO L481 AbstractCegarLoop]: Abstraction has 25986 states and 75706 transitions. [2020-12-17 20:24:03,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 25986 states and 75706 transitions. [2020-12-17 20:24:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 20:24:03,782 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:03,782 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, 1, 1] [2020-12-17 20:24:03,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:03,983 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:03,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:03,985 INFO L82 PathProgramCache]: Analyzing trace with hash 615590430, now seen corresponding path program 4 times [2020-12-17 20:24:03,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:03,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528880842] [2020-12-17 20:24:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:04,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528880842] [2020-12-17 20:24:04,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875327005] [2020-12-17 20:24:04,113 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 [2020-12-17 20:24:04,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:24:04,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:04,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:24:04,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:04,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:04,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:04,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:04,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-12-17 20:24:04,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162523946] [2020-12-17 20:24:04,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 20:24:04,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:04,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 20:24:04,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-12-17 20:24:04,363 INFO L87 Difference]: Start difference. First operand 25986 states and 75706 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:05,071 INFO L93 Difference]: Finished difference Result 35378 states and 103034 transitions. [2020-12-17 20:24:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 20:24:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 20:24:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:05,072 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-12-17 20:24:05,072 INFO L78 Accepts]: Start accepts. Automaton has 35378 states and 103034 transitions. Word has length 43 [2020-12-17 20:24:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:05,072 INFO L481 AbstractCegarLoop]: Abstraction has 35378 states and 103034 transitions. [2020-12-17 20:24:05,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 35378 states and 103034 transitions. [2020-12-17 20:24:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 20:24:05,085 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:05,086 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, 1, 1] [2020-12-17 20:24:05,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-17 20:24:05,287 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash -215280420, now seen corresponding path program 5 times [2020-12-17 20:24:05,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:05,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308846606] [2020-12-17 20:24:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:05,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308846606] [2020-12-17 20:24:05,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646257301] [2020-12-17 20:24:05,470 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 [2020-12-17 20:24:05,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:05,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:05,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 20:24:05,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:05,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:24:05,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:05,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:05,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-12-17 20:24:05,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443348254] [2020-12-17 20:24:05,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-17 20:24:05,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:05,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-17 20:24:05,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-17 20:24:05,680 INFO L87 Difference]: Start difference. First operand 35378 states and 103034 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:06,215 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-12-17 20:24:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:06,973 INFO L93 Difference]: Finished difference Result 52786 states and 154042 transitions. [2020-12-17 20:24:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 20:24:06,973 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 20:24:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:06,975 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=467, Invalid=1339, Unknown=0, NotChecked=0, Total=1806 [2020-12-17 20:24:06,975 INFO L78 Accepts]: Start accepts. Automaton has 52786 states and 154042 transitions. Word has length 43 [2020-12-17 20:24:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:06,975 INFO L481 AbstractCegarLoop]: Abstraction has 52786 states and 154042 transitions. [2020-12-17 20:24:06,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 52786 states and 154042 transitions. [2020-12-17 20:24:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 20:24:06,991 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:06,991 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, 1, 1] [2020-12-17 20:24:07,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-17 20:24:07,193 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash -55830870, now seen corresponding path program 1 times [2020-12-17 20:24:07,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:07,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160072925] [2020-12-17 20:24:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:07,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160072925] [2020-12-17 20:24:07,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636757039] [2020-12-17 20:24:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-17 20:24:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:07,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 20:24:07,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:07,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:24:07,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:07,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:07,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-12-17 20:24:07,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29671512] [2020-12-17 20:24:07,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-17 20:24:07,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:07,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-17 20:24:07,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-12-17 20:24:07,819 INFO L87 Difference]: Start difference. First operand 52786 states and 154042 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:09,013 INFO L93 Difference]: Finished difference Result 64666 states and 188650 transitions. [2020-12-17 20:24:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 20:24:09,014 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 20:24:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:09,016 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 20:24:09,016 INFO L78 Accepts]: Start accepts. Automaton has 64666 states and 188650 transitions. Word has length 43 [2020-12-17 20:24:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:09,016 INFO L481 AbstractCegarLoop]: Abstraction has 64666 states and 188650 transitions. [2020-12-17 20:24:09,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 64666 states and 188650 transitions. [2020-12-17 20:24:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:09,044 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:09,044 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, 1, 1] [2020-12-17 20:24:09,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-17 20:24:09,248 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:09,249 INFO L82 PathProgramCache]: Analyzing trace with hash -773458049, now seen corresponding path program 6 times [2020-12-17 20:24:09,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:09,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067426983] [2020-12-17 20:24:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:09,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067426983] [2020-12-17 20:24:09,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478469674] [2020-12-17 20:24:09,432 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 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 [2020-12-17 20:24:09,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-17 20:24:09,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:09,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:09,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:09,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:09,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:09,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:24:09,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179888399] [2020-12-17 20:24:09,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:24:09,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:24:09,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:24:09,817 INFO L87 Difference]: Start difference. First operand 64666 states and 188650 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:10,264 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2020-12-17 20:24:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:10,680 INFO L93 Difference]: Finished difference Result 67738 states and 197610 transitions. [2020-12-17 20:24:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-17 20:24:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:24:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:10,681 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2020-12-17 20:24:10,681 INFO L78 Accepts]: Start accepts. Automaton has 67738 states and 197610 transitions. Word has length 48 [2020-12-17 20:24:10,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:10,682 INFO L481 AbstractCegarLoop]: Abstraction has 67738 states and 197610 transitions. [2020-12-17 20:24:10,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 67738 states and 197610 transitions. [2020-12-17 20:24:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:10,722 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:10,722 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, 1, 1] [2020-12-17 20:24:10,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-17 20:24:10,928 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash -629767183, now seen corresponding path program 1 times [2020-12-17 20:24:10,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:10,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362981390] [2020-12-17 20:24:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:11,258 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2020-12-17 20:24:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:11,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362981390] [2020-12-17 20:24:11,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352735145] [2020-12-17 20:24:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-17 20:24:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:11,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:11,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:11,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:11,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:11,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:24:11,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532370776] [2020-12-17 20:24:11,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:24:11,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:24:11,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:24:11,508 INFO L87 Difference]: Start difference. First operand 67738 states and 197610 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:12,406 INFO L93 Difference]: Finished difference Result 68570 states and 200042 transitions. [2020-12-17 20:24:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-17 20:24:12,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:24:12,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:12,408 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-12-17 20:24:12,408 INFO L78 Accepts]: Start accepts. Automaton has 68570 states and 200042 transitions. Word has length 48 [2020-12-17 20:24:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:12,408 INFO L481 AbstractCegarLoop]: Abstraction has 68570 states and 200042 transitions. [2020-12-17 20:24:12,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 68570 states and 200042 transitions. [2020-12-17 20:24:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:12,438 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:12,438 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, 1, 1] [2020-12-17 20:24:12,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-17 20:24:12,652 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2054932487, now seen corresponding path program 2 times [2020-12-17 20:24:12,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:12,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59868111] [2020-12-17 20:24:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:12,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59868111] [2020-12-17 20:24:12,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725549133] [2020-12-17 20:24:12,807 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 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 [2020-12-17 20:24:12,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:12,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:12,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:12,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:13,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:13,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:13,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:24:13,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287793051] [2020-12-17 20:24:13,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:24:13,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:13,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:24:13,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:24:13,045 INFO L87 Difference]: Start difference. First operand 68570 states and 200042 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:13,255 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-17 20:24:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:14,301 INFO L93 Difference]: Finished difference Result 69466 states and 202666 transitions. [2020-12-17 20:24:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 20:24:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:24:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:14,302 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2020-12-17 20:24:14,302 INFO L78 Accepts]: Start accepts. Automaton has 69466 states and 202666 transitions. Word has length 48 [2020-12-17 20:24:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:14,303 INFO L481 AbstractCegarLoop]: Abstraction has 69466 states and 202666 transitions. [2020-12-17 20:24:14,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 69466 states and 202666 transitions. [2020-12-17 20:24:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:14,338 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:14,338 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, 1, 1] [2020-12-17 20:24:14,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:14,539 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash -172515643, now seen corresponding path program 7 times [2020-12-17 20:24:14,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:14,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367726433] [2020-12-17 20:24:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:14,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367726433] [2020-12-17 20:24:14,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809311135] [2020-12-17 20:24:14,710 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 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 [2020-12-17 20:24:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:14,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:14,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:14,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:14,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:14,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:24:14,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106743494] [2020-12-17 20:24:14,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:24:14,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:14,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:24:14,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:24:14,968 INFO L87 Difference]: Start difference. First operand 69466 states and 202666 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:16,004 INFO L93 Difference]: Finished difference Result 72474 states and 211434 transitions. [2020-12-17 20:24:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 20:24:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:24:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:16,006 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2020-12-17 20:24:16,006 INFO L78 Accepts]: Start accepts. Automaton has 72474 states and 211434 transitions. Word has length 48 [2020-12-17 20:24:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:16,006 INFO L481 AbstractCegarLoop]: Abstraction has 72474 states and 211434 transitions. [2020-12-17 20:24:16,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 72474 states and 211434 transitions. [2020-12-17 20:24:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:16,033 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:16,033 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, 1, 1] [2020-12-17 20:24:16,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2020-12-17 20:24:16,242 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash -28824777, now seen corresponding path program 3 times [2020-12-17 20:24:16,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:16,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417085984] [2020-12-17 20:24:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417085984] [2020-12-17 20:24:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216503520] [2020-12-17 20:24:16,373 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 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 [2020-12-17 20:24:16,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-17 20:24:16,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:16,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:16,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:16,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:16,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:16,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:24:16,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131458477] [2020-12-17 20:24:16,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:24:16,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:16,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:24:16,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:24:16,584 INFO L87 Difference]: Start difference. First operand 72474 states and 211434 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:17,849 INFO L93 Difference]: Finished difference Result 73242 states and 213674 transitions. [2020-12-17 20:24:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 20:24:17,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:24:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:17,851 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=876, Unknown=0, NotChecked=0, Total=1190 [2020-12-17 20:24:17,851 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 213674 transitions. Word has length 48 [2020-12-17 20:24:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:17,851 INFO L481 AbstractCegarLoop]: Abstraction has 73242 states and 213674 transitions. [2020-12-17 20:24:17,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 213674 transitions. [2020-12-17 20:24:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:17,878 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:17,878 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, 1, 1] [2020-12-17 20:24:18,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:18,080 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:18,080 INFO L82 PathProgramCache]: Analyzing trace with hash -601883841, now seen corresponding path program 8 times [2020-12-17 20:24:18,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:18,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659869849] [2020-12-17 20:24:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:18,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659869849] [2020-12-17 20:24:18,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849178981] [2020-12-17 20:24:18,207 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 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 [2020-12-17 20:24:18,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:18,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:18,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:18,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:18,418 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:18,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:18,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:24:18,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258619245] [2020-12-17 20:24:18,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:24:18,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:18,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:24:18,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:24:18,426 INFO L87 Difference]: Start difference. First operand 73242 states and 213674 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:19,602 INFO L93 Difference]: Finished difference Result 76826 states and 224106 transitions. [2020-12-17 20:24:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-17 20:24:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:24:19,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:19,603 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2020-12-17 20:24:19,603 INFO L78 Accepts]: Start accepts. Automaton has 76826 states and 224106 transitions. Word has length 48 [2020-12-17 20:24:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:19,604 INFO L481 AbstractCegarLoop]: Abstraction has 76826 states and 224106 transitions. [2020-12-17 20:24:19,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 76826 states and 224106 transitions. [2020-12-17 20:24:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:24:19,626 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:19,627 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, 1, 1] [2020-12-17 20:24:19,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-17 20:24:19,828 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:24:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1900592739, now seen corresponding path program 9 times [2020-12-17 20:24:19,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:19,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441415237] [2020-12-17 20:24:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:19,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441415237] [2020-12-17 20:24:19,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166420236] [2020-12-17 20:24:19,973 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 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 [2020-12-17 20:24:20,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-17 20:24:20,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:20,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:24:20,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:20,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:24:24,389 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-17 20:24:24,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:24:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:24:24,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:24,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-12-17 20:24:24,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140382025] [2020-12-17 20:24:24,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 20:24:24,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 20:24:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=199, Unknown=1, NotChecked=0, Total=272 [2020-12-17 20:24:24,441 INFO L87 Difference]: Start difference. First operand 76826 states and 224106 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:28,769 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-17 20:24:33,011 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-17 20:24:37,316 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-17 20:24:44,998 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-17 20:26:49,565 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-12-17 20:27:12,652 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-17 20:29:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:46,103 INFO L93 Difference]: Finished difference Result 91418 states and 266730 transitions. [2020-12-17 20:29:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 20:29:46,104 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:29:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:46,105 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 66.0s TimeCoverageRelationStatistics Valid=585, Invalid=1647, Unknown=24, NotChecked=0, Total=2256 [2020-12-17 20:29:46,105 INFO L78 Accepts]: Start accepts. Automaton has 91418 states and 266730 transitions. Word has length 48 [2020-12-17 20:29:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:46,106 INFO L481 AbstractCegarLoop]: Abstraction has 91418 states and 266730 transitions. [2020-12-17 20:29:46,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 91418 states and 266730 transitions. [2020-12-17 20:29:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:29:46,140 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:46,140 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, 1, 1] [2020-12-17 20:29:46,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:29:46,341 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:29:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:46,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1741143189, now seen corresponding path program 4 times [2020-12-17 20:29:46,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:46,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301745956] [2020-12-17 20:29:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:46,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301745956] [2020-12-17 20:29:46,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24867370] [2020-12-17 20:29:46,545 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 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 [2020-12-17 20:29:46,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:29:46,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:46,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:29:46,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:46,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:29:47,136 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-17 20:29:47,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:29:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:47,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:47,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:29:47,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421320739] [2020-12-17 20:29:47,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:29:47,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:47,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:29:47,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:29:47,170 INFO L87 Difference]: Start difference. First operand 91418 states and 266730 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:48,855 INFO L93 Difference]: Finished difference Result 104282 states and 304234 transitions. [2020-12-17 20:29:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 20:29:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:29:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:48,857 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=475, Invalid=1417, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 20:29:48,857 INFO L78 Accepts]: Start accepts. Automaton has 104282 states and 304234 transitions. Word has length 48 [2020-12-17 20:29:48,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:48,857 INFO L481 AbstractCegarLoop]: Abstraction has 104282 states and 304234 transitions. [2020-12-17 20:29:48,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 104282 states and 304234 transitions. [2020-12-17 20:29:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:29:48,887 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:48,887 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, 1, 1] [2020-12-17 20:29:49,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-17 20:29:49,093 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:29:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1533122351, now seen corresponding path program 5 times [2020-12-17 20:29:49,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:49,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784682291] [2020-12-17 20:29:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:49,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784682291] [2020-12-17 20:29:49,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969727110] [2020-12-17 20:29:49,676 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 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 [2020-12-17 20:29:49,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-17 20:29:49,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:49,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:29:49,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:49,990 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:29:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:50,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:50,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:29:50,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570625868] [2020-12-17 20:29:50,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:29:50,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:29:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:29:50,006 INFO L87 Difference]: Start difference. First operand 104282 states and 304234 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:51,914 INFO L93 Difference]: Finished difference Result 118266 states and 344930 transitions. [2020-12-17 20:29:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 20:29:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:29:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:51,915 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=468, Invalid=1424, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 20:29:51,916 INFO L78 Accepts]: Start accepts. Automaton has 118266 states and 344930 transitions. Word has length 48 [2020-12-17 20:29:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:51,916 INFO L481 AbstractCegarLoop]: Abstraction has 118266 states and 344930 transitions. [2020-12-17 20:29:51,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 118266 states and 344930 transitions. [2020-12-17 20:29:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 20:29:51,940 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:51,941 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, 1, 1] [2020-12-17 20:29:52,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-17 20:29:52,142 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:29:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:52,144 INFO L82 PathProgramCache]: Analyzing trace with hash -119832043, now seen corresponding path program 6 times [2020-12-17 20:29:52,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:52,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460138320] [2020-12-17 20:29:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:52,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460138320] [2020-12-17 20:29:52,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997635675] [2020-12-17 20:29:52,315 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 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 [2020-12-17 20:29:52,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-17 20:29:52,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:52,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 20:29:52,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:52,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:29:52,544 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:29:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:52,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:52,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-12-17 20:29:52,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522046479] [2020-12-17 20:29:52,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 20:29:52,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 20:29:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-12-17 20:29:52,555 INFO L87 Difference]: Start difference. First operand 118266 states and 344930 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:55,075 INFO L93 Difference]: Finished difference Result 140642 states and 410066 transitions. [2020-12-17 20:29:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-17 20:29:55,076 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-17 20:29:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:55,077 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=845, Invalid=2577, Unknown=0, NotChecked=0, Total=3422 [2020-12-17 20:29:55,077 INFO L78 Accepts]: Start accepts. Automaton has 140642 states and 410066 transitions. Word has length 48 [2020-12-17 20:29:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:55,078 INFO L481 AbstractCegarLoop]: Abstraction has 140642 states and 410066 transitions. [2020-12-17 20:29:55,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 140642 states and 410066 transitions. [2020-12-17 20:29:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:29:55,137 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:55,137 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:29:55,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-17 20:29:55,338 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:29:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:55,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1611394660, now seen corresponding path program 10 times [2020-12-17 20:29:55,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:55,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131768181] [2020-12-17 20:29:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:55,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131768181] [2020-12-17 20:29:55,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741130117] [2020-12-17 20:29:55,560 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 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 [2020-12-17 20:29:55,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:29:55,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:55,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:29:55,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:55,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:29:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:55,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:55,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:29:55,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571054523] [2020-12-17 20:29:55,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:29:55,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:55,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:29:55,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:29:55,843 INFO L87 Difference]: Start difference. First operand 140642 states and 410066 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:56,463 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2020-12-17 20:29:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:57,237 INFO L93 Difference]: Finished difference Result 143650 states and 418834 transitions. [2020-12-17 20:29:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 20:29:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:29:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:57,238 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-12-17 20:29:57,239 INFO L78 Accepts]: Start accepts. Automaton has 143650 states and 418834 transitions. Word has length 53 [2020-12-17 20:29:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:57,239 INFO L481 AbstractCegarLoop]: Abstraction has 143650 states and 418834 transitions. [2020-12-17 20:29:57,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 143650 states and 418834 transitions. [2020-12-17 20:29:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:29:57,302 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:57,302 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:29:57,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-17 20:29:57,503 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:29:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1987547128, now seen corresponding path program 11 times [2020-12-17 20:29:57,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:57,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107547329] [2020-12-17 20:29:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107547329] [2020-12-17 20:29:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656617079] [2020-12-17 20:29:58,150 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 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 [2020-12-17 20:29:58,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-17 20:29:58,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:58,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:29:58,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:58,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:29:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:29:58,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:58,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:29:58,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147881895] [2020-12-17 20:29:58,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:29:58,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:58,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:29:58,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:29:58,458 INFO L87 Difference]: Start difference. First operand 143650 states and 418834 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:00,164 INFO L93 Difference]: Finished difference Result 147234 states and 429330 transitions. [2020-12-17 20:30:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 20:30:00,165 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:00,166 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=391, Invalid=1015, Unknown=0, NotChecked=0, Total=1406 [2020-12-17 20:30:00,166 INFO L78 Accepts]: Start accepts. Automaton has 147234 states and 429330 transitions. Word has length 53 [2020-12-17 20:30:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:00,167 INFO L481 AbstractCegarLoop]: Abstraction has 147234 states and 429330 transitions. [2020-12-17 20:30:00,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:00,167 INFO L276 IsEmpty]: Start isEmpty. Operand 147234 states and 429330 transitions. [2020-12-17 20:30:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:00,226 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:00,227 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, 1, 1] [2020-12-17 20:30:00,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-17 20:30:00,428 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:00,428 INFO L82 PathProgramCache]: Analyzing trace with hash 144817900, now seen corresponding path program 7 times [2020-12-17 20:30:00,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:00,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051965676] [2020-12-17 20:30:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:00,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051965676] [2020-12-17 20:30:00,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142517126] [2020-12-17 20:30:00,625 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 [2020-12-17 20:30:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:00,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:00,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:00,876 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:00,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:00,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:00,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407355728] [2020-12-17 20:30:00,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:00,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:00,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:00,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:00,891 INFO L87 Difference]: Start difference. First operand 147234 states and 429330 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:02,628 INFO L93 Difference]: Finished difference Result 149218 states and 435154 transitions. [2020-12-17 20:30:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 20:30:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:02,630 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=1211, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 20:30:02,630 INFO L78 Accepts]: Start accepts. Automaton has 149218 states and 435154 transitions. Word has length 53 [2020-12-17 20:30:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:02,630 INFO L481 AbstractCegarLoop]: Abstraction has 149218 states and 435154 transitions. [2020-12-17 20:30:02,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 149218 states and 435154 transitions. [2020-12-17 20:30:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:02,691 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:02,691 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, 1, 1] [2020-12-17 20:30:02,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:02,892 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:02,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:02,893 INFO L82 PathProgramCache]: Analyzing trace with hash -253297978, now seen corresponding path program 8 times [2020-12-17 20:30:02,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:02,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077699904] [2020-12-17 20:30:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:03,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077699904] [2020-12-17 20:30:03,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204800904] [2020-12-17 20:30:03,083 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 [2020-12-17 20:30:03,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:30:03,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:03,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:03,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:03,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:03,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:03,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:03,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225901215] [2020-12-17 20:30:03,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:03,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:03,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:03,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:03,401 INFO L87 Difference]: Start difference. First operand 149218 states and 435154 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:05,098 INFO L93 Difference]: Finished difference Result 153954 states and 448978 transitions. [2020-12-17 20:30:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 20:30:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:05,100 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2020-12-17 20:30:05,100 INFO L78 Accepts]: Start accepts. Automaton has 153954 states and 448978 transitions. Word has length 53 [2020-12-17 20:30:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:05,100 INFO L481 AbstractCegarLoop]: Abstraction has 153954 states and 448978 transitions. [2020-12-17 20:30:05,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 153954 states and 448978 transitions. [2020-12-17 20:30:05,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:05,625 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:05,626 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, 1, 1] [2020-12-17 20:30:05,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:05,826 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1610795128, now seen corresponding path program 9 times [2020-12-17 20:30:05,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:05,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020543746] [2020-12-17 20:30:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:06,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020543746] [2020-12-17 20:30:06,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489758412] [2020-12-17 20:30:06,018 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 [2020-12-17 20:30:06,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-17 20:30:06,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:06,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:06,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:06,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:06,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:06,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:06,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156704600] [2020-12-17 20:30:06,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:06,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:06,333 INFO L87 Difference]: Start difference. First operand 153954 states and 448978 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:08,296 INFO L93 Difference]: Finished difference Result 156514 states and 456466 transitions. [2020-12-17 20:30:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 20:30:08,297 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:08,298 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=481, Invalid=1411, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 20:30:08,298 INFO L78 Accepts]: Start accepts. Automaton has 156514 states and 456466 transitions. Word has length 53 [2020-12-17 20:30:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:08,298 INFO L481 AbstractCegarLoop]: Abstraction has 156514 states and 456466 transitions. [2020-12-17 20:30:08,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 156514 states and 456466 transitions. [2020-12-17 20:30:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:08,362 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:08,362 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, 1, 1] [2020-12-17 20:30:08,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:08,566 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:08,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1156131728, now seen corresponding path program 10 times [2020-12-17 20:30:08,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:08,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079132109] [2020-12-17 20:30:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:08,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079132109] [2020-12-17 20:30:08,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207802548] [2020-12-17 20:30:08,759 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 [2020-12-17 20:30:08,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:30:08,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:08,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:08,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:09,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:09,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:09,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:09,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192243785] [2020-12-17 20:30:09,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:09,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:09,045 INFO L87 Difference]: Start difference. First operand 156514 states and 456466 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:10,222 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-12-17 20:30:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:11,174 INFO L93 Difference]: Finished difference Result 158434 states and 462098 transitions. [2020-12-17 20:30:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 20:30:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:11,176 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=594, Invalid=1758, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 20:30:11,177 INFO L78 Accepts]: Start accepts. Automaton has 158434 states and 462098 transitions. Word has length 53 [2020-12-17 20:30:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:11,177 INFO L481 AbstractCegarLoop]: Abstraction has 158434 states and 462098 transitions. [2020-12-17 20:30:11,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 158434 states and 462098 transitions. [2020-12-17 20:30:11,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:11,723 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:11,723 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, 1, 1] [2020-12-17 20:30:11,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-17 20:30:11,940 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1985432118, now seen corresponding path program 11 times [2020-12-17 20:30:11,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:11,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307249923] [2020-12-17 20:30:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:12,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307249923] [2020-12-17 20:30:12,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713105033] [2020-12-17 20:30:12,138 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 [2020-12-17 20:30:12,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-17 20:30:12,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:12,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:12,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:12,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:12,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:12,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113776725] [2020-12-17 20:30:12,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:12,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:12,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:12,465 INFO L87 Difference]: Start difference. First operand 158434 states and 462098 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:14,682 INFO L93 Difference]: Finished difference Result 161890 states and 472210 transitions. [2020-12-17 20:30:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 20:30:14,683 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:14,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:14,684 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=558, Invalid=1604, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 20:30:14,685 INFO L78 Accepts]: Start accepts. Automaton has 161890 states and 472210 transitions. Word has length 53 [2020-12-17 20:30:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:14,685 INFO L481 AbstractCegarLoop]: Abstraction has 161890 states and 472210 transitions. [2020-12-17 20:30:14,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 161890 states and 472210 transitions. [2020-12-17 20:30:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:14,751 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:14,752 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:30:14,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:14,961 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:14,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1738400478, now seen corresponding path program 12 times [2020-12-17 20:30:14,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:14,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543425188] [2020-12-17 20:30:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:15,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543425188] [2020-12-17 20:30:15,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377747959] [2020-12-17 20:30:15,171 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 [2020-12-17 20:30:15,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-17 20:30:15,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:15,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:15,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:15,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:15,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:15,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:15,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493036258] [2020-12-17 20:30:15,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:15,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:15,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:15,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:15,459 INFO L87 Difference]: Start difference. First operand 161890 states and 472210 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:17,256 INFO L93 Difference]: Finished difference Result 164834 states and 480786 transitions. [2020-12-17 20:30:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 20:30:17,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:17,258 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=365, Invalid=895, Unknown=0, NotChecked=0, Total=1260 [2020-12-17 20:30:17,258 INFO L78 Accepts]: Start accepts. Automaton has 164834 states and 480786 transitions. Word has length 53 [2020-12-17 20:30:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:17,258 INFO L481 AbstractCegarLoop]: Abstraction has 164834 states and 480786 transitions. [2020-12-17 20:30:17,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 164834 states and 480786 transitions. [2020-12-17 20:30:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:17,348 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:17,348 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:30:17,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-17 20:30:17,549 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:17,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2114552946, now seen corresponding path program 13 times [2020-12-17 20:30:17,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:17,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153775557] [2020-12-17 20:30:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:17,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153775557] [2020-12-17 20:30:17,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809583835] [2020-12-17 20:30:17,759 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 [2020-12-17 20:30:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:17,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:17,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:18,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:18,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:18,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:18,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859758300] [2020-12-17 20:30:18,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:18,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:18,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:18,691 INFO L87 Difference]: Start difference. First operand 164834 states and 480786 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:20,792 INFO L93 Difference]: Finished difference Result 168290 states and 490898 transitions. [2020-12-17 20:30:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 20:30:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:20,802 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=460, Invalid=1180, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 20:30:20,802 INFO L78 Accepts]: Start accepts. Automaton has 168290 states and 490898 transitions. Word has length 53 [2020-12-17 20:30:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:20,802 INFO L481 AbstractCegarLoop]: Abstraction has 168290 states and 490898 transitions. [2020-12-17 20:30:20,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:20,803 INFO L276 IsEmpty]: Start isEmpty. Operand 168290 states and 490898 transitions. [2020-12-17 20:30:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:20,903 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:20,903 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, 1, 1] [2020-12-17 20:30:21,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:21,117 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash 271823718, now seen corresponding path program 12 times [2020-12-17 20:30:21,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:21,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760293890] [2020-12-17 20:30:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:21,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760293890] [2020-12-17 20:30:21,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035823202] [2020-12-17 20:30:21,296 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 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 [2020-12-17 20:30:21,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-17 20:30:21,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:21,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:21,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:21,559 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:21,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:21,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:21,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867305883] [2020-12-17 20:30:21,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:21,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:21,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:21,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:21,575 INFO L87 Difference]: Start difference. First operand 168290 states and 490898 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:23,789 INFO L93 Difference]: Finished difference Result 170146 states and 496338 transitions. [2020-12-17 20:30:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 20:30:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:23,791 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 20:30:23,791 INFO L78 Accepts]: Start accepts. Automaton has 170146 states and 496338 transitions. Word has length 53 [2020-12-17 20:30:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:23,792 INFO L481 AbstractCegarLoop]: Abstraction has 170146 states and 496338 transitions. [2020-12-17 20:30:23,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 170146 states and 496338 transitions. [2020-12-17 20:30:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:23,875 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:23,876 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, 1, 1] [2020-12-17 20:30:24,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-17 20:30:24,090 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -126292160, now seen corresponding path program 13 times [2020-12-17 20:30:24,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:24,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222711366] [2020-12-17 20:30:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:24,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222711366] [2020-12-17 20:30:24,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167591140] [2020-12-17 20:30:24,271 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 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 [2020-12-17 20:30:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:24,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:24,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:24,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:24,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:24,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623979109] [2020-12-17 20:30:24,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:24,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:24,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:24,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:24,566 INFO L87 Difference]: Start difference. First operand 170146 states and 496338 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:26,077 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-17 20:30:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:26,645 INFO L93 Difference]: Finished difference Result 171810 states and 501202 transitions. [2020-12-17 20:30:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 20:30:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:26,647 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=456, Invalid=1350, Unknown=0, NotChecked=0, Total=1806 [2020-12-17 20:30:26,647 INFO L78 Accepts]: Start accepts. Automaton has 171810 states and 501202 transitions. Word has length 53 [2020-12-17 20:30:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:26,648 INFO L481 AbstractCegarLoop]: Abstraction has 171810 states and 501202 transitions. [2020-12-17 20:30:26,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 171810 states and 501202 transitions. [2020-12-17 20:30:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:26,735 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:26,735 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:30:26,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:26,937 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash 272515748, now seen corresponding path program 14 times [2020-12-17 20:30:26,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:26,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399667585] [2020-12-17 20:30:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:27,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399667585] [2020-12-17 20:30:27,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811519608] [2020-12-17 20:30:27,182 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 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 [2020-12-17 20:30:27,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:30:27,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:27,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:27,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:27,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:27,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:27,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:27,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680180635] [2020-12-17 20:30:27,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:27,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:27,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:27,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:27,478 INFO L87 Difference]: Start difference. First operand 171810 states and 501202 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:29,412 INFO L93 Difference]: Finished difference Result 174690 states and 509586 transitions. [2020-12-17 20:30:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 20:30:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:29,414 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=946, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 20:30:29,414 INFO L78 Accepts]: Start accepts. Automaton has 174690 states and 509586 transitions. Word has length 53 [2020-12-17 20:30:29,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:29,414 INFO L481 AbstractCegarLoop]: Abstraction has 174690 states and 509586 transitions. [2020-12-17 20:30:29,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 174690 states and 509586 transitions. [2020-12-17 20:30:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:29,509 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:29,509 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:30:29,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-17 20:30:29,723 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:29,724 INFO L82 PathProgramCache]: Analyzing trace with hash 648668216, now seen corresponding path program 15 times [2020-12-17 20:30:29,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:29,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052021464] [2020-12-17 20:30:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:29,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052021464] [2020-12-17 20:30:29,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960677873] [2020-12-17 20:30:29,892 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:29,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-17 20:30:29,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:29,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:29,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:30,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:30,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:30,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:30,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678519409] [2020-12-17 20:30:30,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:30,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:30,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:30,214 INFO L87 Difference]: Start difference. First operand 174690 states and 509586 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:32,466 INFO L93 Difference]: Finished difference Result 176546 states and 515026 transitions. [2020-12-17 20:30:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 20:30:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:32,468 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=478, Invalid=1244, Unknown=0, NotChecked=0, Total=1722 [2020-12-17 20:30:32,468 INFO L78 Accepts]: Start accepts. Automaton has 176546 states and 515026 transitions. Word has length 53 [2020-12-17 20:30:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:32,468 INFO L481 AbstractCegarLoop]: Abstraction has 176546 states and 515026 transitions. [2020-12-17 20:30:32,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 176546 states and 515026 transitions. [2020-12-17 20:30:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:32,538 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:32,538 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:30:32,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-17 20:30:32,739 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:32,740 INFO L82 PathProgramCache]: Analyzing trace with hash -156852450, now seen corresponding path program 16 times [2020-12-17 20:30:32,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:32,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903992606] [2020-12-17 20:30:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:32,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903992606] [2020-12-17 20:30:32,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368837741] [2020-12-17 20:30:32,922 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:33,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:30:33,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:33,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:33,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:33,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:33,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:33,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:30:33,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533232876] [2020-12-17 20:30:33,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:30:33,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:33,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:30:33,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:30:33,862 INFO L87 Difference]: Start difference. First operand 176546 states and 515026 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:35,404 INFO L93 Difference]: Finished difference Result 177314 states and 517266 transitions. [2020-12-17 20:30:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 20:30:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:30:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:35,406 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=413, Invalid=993, Unknown=0, NotChecked=0, Total=1406 [2020-12-17 20:30:35,406 INFO L78 Accepts]: Start accepts. Automaton has 177314 states and 517266 transitions. Word has length 53 [2020-12-17 20:30:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:35,406 INFO L481 AbstractCegarLoop]: Abstraction has 177314 states and 517266 transitions. [2020-12-17 20:30:35,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 177314 states and 517266 transitions. [2020-12-17 20:30:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:30:36,045 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:36,045 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:30:36,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-17 20:30:36,259 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:30:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1455561348, now seen corresponding path program 17 times [2020-12-17 20:30:36,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:36,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452564262] [2020-12-17 20:30:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:36,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452564262] [2020-12-17 20:30:36,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291804866] [2020-12-17 20:30:36,451 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:36,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-17 20:30:36,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:36,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:30:36,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:36,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:30:38,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:30:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:30:38,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:38,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-12-17 20:30:38,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835413832] [2020-12-17 20:30:38,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 20:30:38,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 20:30:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=249, Unknown=1, NotChecked=0, Total=342 [2020-12-17 20:30:38,922 INFO L87 Difference]: Start difference. First operand 177314 states and 517266 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:45,704 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-17 20:30:55,522 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-17 20:34:01,695 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-12-17 20:34:11,942 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-17 20:37:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:05,309 INFO L93 Difference]: Finished difference Result 248132 states and 722296 transitions. [2020-12-17 20:37:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 20:37:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:05,311 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 66.3s TimeCoverageRelationStatistics Valid=719, Invalid=2013, Unknown=24, NotChecked=0, Total=2756 [2020-12-17 20:37:05,311 INFO L78 Accepts]: Start accepts. Automaton has 248132 states and 722296 transitions. Word has length 53 [2020-12-17 20:37:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:05,312 INFO L481 AbstractCegarLoop]: Abstraction has 248132 states and 722296 transitions. [2020-12-17 20:37:05,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 248132 states and 722296 transitions. [2020-12-17 20:37:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:05,396 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:05,396 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:37:05,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-12-17 20:37:05,597 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:05,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1131171224, now seen corresponding path program 18 times [2020-12-17 20:37:05,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:05,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222310303] [2020-12-17 20:37:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:05,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222310303] [2020-12-17 20:37:05,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693217456] [2020-12-17 20:37:05,821 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:05,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-17 20:37:05,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:37:05,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:37:05,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:06,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:06,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:06,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:37:06,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719588087] [2020-12-17 20:37:06,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:37:06,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:06,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:37:06,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:37:06,182 INFO L87 Difference]: Start difference. First operand 248132 states and 722296 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:08,930 INFO L93 Difference]: Finished difference Result 255812 states and 744440 transitions. [2020-12-17 20:37:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 20:37:08,932 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:08,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:08,933 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=380, Invalid=952, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 20:37:08,933 INFO L78 Accepts]: Start accepts. Automaton has 255812 states and 744440 transitions. Word has length 53 [2020-12-17 20:37:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:08,934 INFO L481 AbstractCegarLoop]: Abstraction has 255812 states and 744440 transitions. [2020-12-17 20:37:08,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 255812 states and 744440 transitions. [2020-12-17 20:37:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:09,043 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:09,043 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:37:09,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:09,244 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash 201940260, now seen corresponding path program 19 times [2020-12-17 20:37:09,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:09,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313150563] [2020-12-17 20:37:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313150563] [2020-12-17 20:37:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255445566] [2020-12-17 20:37:09,516 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:09,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:37:09,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:09,979 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:09,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:10,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:37:10,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541279108] [2020-12-17 20:37:10,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:37:10,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:10,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:37:10,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:37:10,653 INFO L87 Difference]: Start difference. First operand 255812 states and 744440 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:14,601 INFO L93 Difference]: Finished difference Result 262300 states and 763328 transitions. [2020-12-17 20:37:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 20:37:14,603 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:14,604 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=541, Invalid=1529, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 20:37:14,604 INFO L78 Accepts]: Start accepts. Automaton has 262300 states and 763328 transitions. Word has length 53 [2020-12-17 20:37:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:14,605 INFO L481 AbstractCegarLoop]: Abstraction has 262300 states and 763328 transitions. [2020-12-17 20:37:14,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 262300 states and 763328 transitions. [2020-12-17 20:37:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:14,695 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:14,695 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-17 20:37:14,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-17 20:37:14,896 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1615230568, now seen corresponding path program 20 times [2020-12-17 20:37:14,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:14,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634721381] [2020-12-17 20:37:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:15,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634721381] [2020-12-17 20:37:15,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423343392] [2020-12-17 20:37:15,175 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:15,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:37:15,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:37:15,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:37:15,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:15,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:37:15,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:15,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:15,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:37:15,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606467559] [2020-12-17 20:37:15,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:37:15,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:37:15,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:37:15,634 INFO L87 Difference]: Start difference. First operand 262300 states and 763328 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:20,101 INFO L93 Difference]: Finished difference Result 299720 states and 872668 transitions. [2020-12-17 20:37:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-17 20:37:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:20,104 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=818, Invalid=2262, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 20:37:20,104 INFO L78 Accepts]: Start accepts. Automaton has 299720 states and 872668 transitions. Word has length 53 [2020-12-17 20:37:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:20,105 INFO L481 AbstractCegarLoop]: Abstraction has 299720 states and 872668 transitions. [2020-12-17 20:37:20,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 299720 states and 872668 transitions. [2020-12-17 20:37:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:20,210 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:20,210 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, 1, 1] [2020-12-17 20:37:20,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-17 20:37:20,416 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1088090960, now seen corresponding path program 14 times [2020-12-17 20:37:20,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:20,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391908530] [2020-12-17 20:37:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:20,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391908530] [2020-12-17 20:37:20,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4407313] [2020-12-17 20:37:20,662 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:20,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:37:20,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:37:20,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:37:20,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:21,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:21,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:21,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:37:21,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191115421] [2020-12-17 20:37:21,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:37:21,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:21,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:37:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:37:21,896 INFO L87 Difference]: Start difference. First operand 299720 states and 872668 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:26,036 INFO L93 Difference]: Finished difference Result 302920 states and 882076 transitions. [2020-12-17 20:37:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 20:37:26,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:26,039 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=627, Invalid=1923, Unknown=0, NotChecked=0, Total=2550 [2020-12-17 20:37:26,039 INFO L78 Accepts]: Start accepts. Automaton has 302920 states and 882076 transitions. Word has length 53 [2020-12-17 20:37:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:26,039 INFO L481 AbstractCegarLoop]: Abstraction has 302920 states and 882076 transitions. [2020-12-17 20:37:26,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 302920 states and 882076 transitions. [2020-12-17 20:37:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:26,120 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:26,121 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, 1, 1] [2020-12-17 20:37:26,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:26,334 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 325199348, now seen corresponding path program 15 times [2020-12-17 20:37:26,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:26,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853430365] [2020-12-17 20:37:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:26,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853430365] [2020-12-17 20:37:26,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545748843] [2020-12-17 20:37:26,623 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:26,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-17 20:37:26,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:37:26,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:37:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:27,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:37:27,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:27,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:27,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-12-17 20:37:27,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524988319] [2020-12-17 20:37:27,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 20:37:27,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:27,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 20:37:27,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-12-17 20:37:27,067 INFO L87 Difference]: Start difference. First operand 302920 states and 882076 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:34,007 INFO L93 Difference]: Finished difference Result 341126 states and 993558 transitions. [2020-12-17 20:37:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-17 20:37:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:34,009 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1271, Invalid=4131, Unknown=0, NotChecked=0, Total=5402 [2020-12-17 20:37:34,009 INFO L78 Accepts]: Start accepts. Automaton has 341126 states and 993558 transitions. Word has length 53 [2020-12-17 20:37:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:34,009 INFO L481 AbstractCegarLoop]: Abstraction has 341126 states and 993558 transitions. [2020-12-17 20:37:34,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 341126 states and 993558 transitions. [2020-12-17 20:37:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:34,121 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:34,121 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, 1, 1] [2020-12-17 20:37:34,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-17 20:37:34,336 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1407530148, now seen corresponding path program 16 times [2020-12-17 20:37:34,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:34,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640839911] [2020-12-17 20:37:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:34,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640839911] [2020-12-17 20:37:34,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123905783] [2020-12-17 20:37:34,599 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:34,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:37:34,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:37:34,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 20:37:34,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:35,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:35,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:35,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-17 20:37:35,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038597926] [2020-12-17 20:37:35,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 20:37:35,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 20:37:35,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-12-17 20:37:35,088 INFO L87 Difference]: Start difference. First operand 341126 states and 993558 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:40,693 INFO L93 Difference]: Finished difference Result 350054 states and 1019662 transitions. [2020-12-17 20:37:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-17 20:37:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:40,696 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=718, Invalid=2252, Unknown=0, NotChecked=0, Total=2970 [2020-12-17 20:37:40,696 INFO L78 Accepts]: Start accepts. Automaton has 350054 states and 1019662 transitions. Word has length 53 [2020-12-17 20:37:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:40,697 INFO L481 AbstractCegarLoop]: Abstraction has 350054 states and 1019662 transitions. [2020-12-17 20:37:40,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand 350054 states and 1019662 transitions. [2020-12-17 20:37:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 20:37:40,831 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:37:40,832 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, 1, 1] [2020-12-17 20:37:41,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:41,046 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 20:37:41,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:37:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1474146840, now seen corresponding path program 17 times [2020-12-17 20:37:41,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:37:41,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70322710] [2020-12-17 20:37:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:37:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:37:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:41,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70322710] [2020-12-17 20:37:41,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344936502] [2020-12-17 20:37:41,345 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:37:41,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-17 20:37:41,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:37:41,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:37:41,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:37:41,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 20:37:41,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 20:37:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 20:37:41,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:37:41,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-12-17 20:37:41,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998093612] [2020-12-17 20:37:41,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 20:37:41,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:37:41,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 20:37:41,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-12-17 20:37:41,870 INFO L87 Difference]: Start difference. First operand 350054 states and 1019662 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:37:49,346 INFO L93 Difference]: Finished difference Result 388110 states and 1130686 transitions. [2020-12-17 20:37:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-12-17 20:37:49,347 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-12-17 20:37:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:37:49,348 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1379, Invalid=4627, Unknown=0, NotChecked=0, Total=6006 [2020-12-17 20:37:49,349 INFO L78 Accepts]: Start accepts. Automaton has 388110 states and 1130686 transitions. Word has length 53 [2020-12-17 20:37:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:37:49,349 INFO L481 AbstractCegarLoop]: Abstraction has 388110 states and 1130686 transitions. [2020-12-17 20:37:49,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:37:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 388110 states and 1130686 transitions. Received shutdown request... [2020-12-17 20:37:49,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-12-17 20:37:49,626 WARN L546 AbstractCegarLoop]: Verification canceled [2020-12-17 20:37:49,632 WARN L250 ceAbstractionStarter]: Timeout [2020-12-17 20:37:49,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 08:37:49 BasicIcfg [2020-12-17 20:37:49,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 20:37:49,634 INFO L168 Benchmark]: Toolchain (without parser) took 838150.80 ms. Allocated memory was 302.0 MB in the beginning and 12.1 GB in the end (delta: 11.8 GB). Free memory was 277.5 MB in the beginning and 6.2 GB in the end (delta: -5.9 GB). Peak memory consumption was 5.9 GB. Max. memory is 16.0 GB. [2020-12-17 20:37:49,635 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory was 272.7 MB in the beginning and 272.6 MB in the end (delta: 64.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 20:37:49,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.10 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 248.2 MB in the end (delta: 29.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-17 20:37:49,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.85 ms. Allocated memory is still 302.0 MB. Free memory was 248.2 MB in the beginning and 246.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 20:37:49,636 INFO L168 Benchmark]: Boogie Preprocessor took 32.47 ms. Allocated memory is still 302.0 MB. Free memory was 246.3 MB in the beginning and 245.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 20:37:49,636 INFO L168 Benchmark]: RCFGBuilder took 648.87 ms. Allocated memory is still 302.0 MB. Free memory was 244.9 MB in the beginning and 264.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2020-12-17 20:37:49,637 INFO L168 Benchmark]: TraceAbstraction took 836752.52 ms. Allocated memory was 302.0 MB in the beginning and 12.1 GB in the end (delta: 11.8 GB). Free memory was 264.5 MB in the beginning and 6.2 GB in the end (delta: -5.9 GB). Peak memory consumption was 5.9 GB. Max. memory is 16.0 GB. [2020-12-17 20:37:49,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory was 272.7 MB in the beginning and 272.6 MB in the end (delta: 64.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 660.10 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 248.2 MB in the end (delta: 29.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.85 ms. Allocated memory is still 302.0 MB. Free memory was 248.2 MB in the beginning and 246.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.47 ms. Allocated memory is still 302.0 MB. Free memory was 246.3 MB in the beginning and 245.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 648.87 ms. Allocated memory is still 302.0 MB. Free memory was 244.9 MB in the beginning and 264.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 836752.52 ms. Allocated memory was 302.0 MB in the beginning and 12.1 GB in the end (delta: 11.8 GB). Free memory was 264.5 MB in the beginning and 6.2 GB in the end (delta: -5.9 GB). Peak memory consumption was 5.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 20). Cancelled while IsEmpty was searching accepting run (input had 388110 states). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 836.5s, OverallIterations: 48, TraceHistogramMax: 4, AutomataDifference: 791.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 4630 SDtfs, 41220 SDslu, 49880 SDs, 0 SdLazy, 7831 SolverSat, 1906 SolverUnsat, 312 SolverUnknown, 0 SolverNotchecked, 585.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3478 GetRequests, 1787 SyntacticMatches, 31 SemanticMatches, 1660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22252 ImplicationChecksByTransitivity, 184.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388110occurred in iteration=48, 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, 1.4s SatisfiabilityAnalysisTime, 26.7s InterpolantComputationTime, 4277 NumberOfCodeBlocks, 4277 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 4188 ConstructedInterpolants, 2 QuantifiedInterpolants, 1424333 SizeOfPredicates, 166 NumberOfNonLiveVariables, 5155 ConjunctsInSsa, 465 ConjunctsInUnsatCore, 89 InterpolantComputations, 7 PerfectInterpolantSequences, 0/860 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 could not prove your program: Timeout Completed graceful shutdown