/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:14:03,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:14:03,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:14:03,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 16:14:03,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 16:14:03,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 16:14:03,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 16:14:03,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 16:14:03,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 16:14:03,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 16:14:03,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 16:14:03,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 16:14:03,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:14:03,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:14:03,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:14:03,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:14:03,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:14:03,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:14:03,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:14:03,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:14:03,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:14:03,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:14:03,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:14:03,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:14:03,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 16:14:03,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 16:14:03,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 16:14:03,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 16:14:03,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 16:14:03,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 16:14:03,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 16:14:03,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 16:14:03,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 16:14:03,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 16:14:03,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 16:14:03,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 16:14:03,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 16:14:03,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 16:14:03,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:14:03,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:14:03,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:14:03,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-09 16:14:03,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:14:03,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:14:03,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:14:03,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:14:03,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:14:03,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:14:03,645 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:14:03,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:14:03,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:14:03,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:14:03,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:14:03,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:14:03,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:14:03,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:14:03,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:14:03,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:14:03,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:14:03,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:14:03,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:14:03,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:14:03,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:14:03,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:14:03,649 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:14:03,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:14:03,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:14:03,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:14:03,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:14:03,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:14:04,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:14:04,002 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:14:04,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-07-09 16:14:04,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51b51f16/e95028d4b60a4e1aafeb9035ee7aaae8/FLAG6d1e27fc6 [2021-07-09 16:14:04,631 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:14:04,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-07-09 16:14:04,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51b51f16/e95028d4b60a4e1aafeb9035ee7aaae8/FLAG6d1e27fc6 [2021-07-09 16:14:04,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51b51f16/e95028d4b60a4e1aafeb9035ee7aaae8 [2021-07-09 16:14:04,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:14:04,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:14:04,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:14:04,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:14:04,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:14:04,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:14:04" (1/1) ... [2021-07-09 16:14:04,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd4d6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:04, skipping insertion in model container [2021-07-09 16:14:04,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:14:04" (1/1) ... [2021-07-09 16:14:04,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:14:04,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:14:05,342 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[30286,30299] [2021-07-09 16:14:05,361 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[31038,31051] [2021-07-09 16:14:05,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:14:05,370 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:14:05,406 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[30286,30299] [2021-07-09 16:14:05,416 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[31038,31051] [2021-07-09 16:14:05,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:14:05,459 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:14:05,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05 WrapperNode [2021-07-09 16:14:05,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:14:05,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:14:05,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:14:05,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:14:05,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:14:05,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:14:05,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:14:05,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:14:05,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... [2021-07-09 16:14:05,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:14:05,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:14:05,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:14:05,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:14:05,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:14:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-07-09 16:14:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-07-09 16:14:05,632 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-07-09 16:14:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:14:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:14:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:14:05,636 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:14:06,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:14:06,026 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-09 16:14:06,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:14:06 BoogieIcfgContainer [2021-07-09 16:14:06,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:14:06,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:14:06,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:14:06,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:14:06,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:14:04" (1/3) ... [2021-07-09 16:14:06,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53786801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:14:06, skipping insertion in model container [2021-07-09 16:14:06,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:14:05" (2/3) ... [2021-07-09 16:14:06,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53786801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:14:06, skipping insertion in model container [2021-07-09 16:14:06,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:14:06" (3/3) ... [2021-07-09 16:14:06,036 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2021-07-09 16:14:06,041 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:14:06,041 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:14:06,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:14:06,042 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:14:06,072 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,073 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,073 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,073 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,073 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,073 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,073 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,076 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,076 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,076 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,077 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,080 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,080 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,085 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,085 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,086 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,086 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,087 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,089 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,089 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,089 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,089 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,089 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,090 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,095 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,095 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,095 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,095 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,095 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,095 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:14:06,097 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:14:06,117 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 16:14:06,143 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:14:06,143 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:14:06,143 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:14:06,143 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:14:06,143 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:14:06,143 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:14:06,144 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:14:06,144 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:14:06,157 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-07-09 16:14:06,224 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 16:14:06,243 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:06,243 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:14:06,244 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1746009969, now seen corresponding path program 1 times [2021-07-09 16:14:06,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:06,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044981524] [2021-07-09 16:14:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:06,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:06,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044981524] [2021-07-09 16:14:06,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044981524] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:14:06,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:14:06,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:14:06,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329788729] [2021-07-09 16:14:06,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:14:06,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:06,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:14:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:14:06,702 INFO L87 Difference]: Start difference. First operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:06,896 INFO L93 Difference]: Finished difference Result 1756 states and 4724 transitions. [2021-07-09 16:14:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:14:06,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-09 16:14:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:06,919 INFO L225 Difference]: With dead ends: 1756 [2021-07-09 16:14:06,920 INFO L226 Difference]: Without dead ends: 1425 [2021-07-09 16:14:06,921 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 16:14:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-07-09 16:14:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-07-09 16:14:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.7184986595174263) internal successors, (3042), 1119 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-07-09 16:14:07,056 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-07-09 16:14:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:07,057 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-07-09 16:14:07,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-07-09 16:14:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-07-09 16:14:07,065 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:07,065 INFO L508 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] [2021-07-09 16:14:07,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:14:07,065 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:07,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:07,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1710770003, now seen corresponding path program 1 times [2021-07-09 16:14:07,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:07,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591601900] [2021-07-09 16:14:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:07,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:07,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591601900] [2021-07-09 16:14:07,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591601900] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:14:07,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:14:07,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:14:07,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331935547] [2021-07-09 16:14:07,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:14:07,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:07,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:14:07,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:14:07,229 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:07,402 INFO L93 Difference]: Finished difference Result 2001 states and 5364 transitions. [2021-07-09 16:14:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 16:14:07,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-07-09 16:14:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:07,415 INFO L225 Difference]: With dead ends: 2001 [2021-07-09 16:14:07,415 INFO L226 Difference]: Without dead ends: 1670 [2021-07-09 16:14:07,417 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:14:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-07-09 16:14:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1304. [2021-07-09 16:14:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 2.7206446661550268) internal successors, (3545), 1303 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3545 transitions. [2021-07-09 16:14:07,469 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3545 transitions. Word has length 37 [2021-07-09 16:14:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:07,470 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 3545 transitions. [2021-07-09 16:14:07,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3545 transitions. [2021-07-09 16:14:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-07-09 16:14:07,473 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:07,474 INFO L508 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] [2021-07-09 16:14:07,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:14:07,474 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1534224383, now seen corresponding path program 1 times [2021-07-09 16:14:07,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:07,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776608736] [2021-07-09 16:14:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:07,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:07,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776608736] [2021-07-09 16:14:07,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776608736] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:14:07,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:14:07,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:14:07,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124942422] [2021-07-09 16:14:07,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:14:07,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:14:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:14:07,614 INFO L87 Difference]: Start difference. First operand 1304 states and 3545 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:07,744 INFO L93 Difference]: Finished difference Result 2270 states and 6052 transitions. [2021-07-09 16:14:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 16:14:07,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-07-09 16:14:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:07,756 INFO L225 Difference]: With dead ends: 2270 [2021-07-09 16:14:07,756 INFO L226 Difference]: Without dead ends: 2003 [2021-07-09 16:14:07,757 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:14:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-07-09 16:14:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1514. [2021-07-09 16:14:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.701916721744878) internal successors, (4088), 1513 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-07-09 16:14:07,826 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-07-09 16:14:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:07,826 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-07-09 16:14:07,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-07-09 16:14:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 16:14:07,829 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:07,830 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:14:07,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:14:07,830 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:07,831 INFO L82 PathProgramCache]: Analyzing trace with hash 628492421, now seen corresponding path program 1 times [2021-07-09 16:14:07,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:07,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550169364] [2021-07-09 16:14:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:07,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:07,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550169364] [2021-07-09 16:14:07,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550169364] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:14:07,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:14:07,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:14:07,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843675545] [2021-07-09 16:14:07,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:14:07,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:07,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:14:07,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:14:07,964 INFO L87 Difference]: Start difference. First operand 1514 states and 4088 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:08,188 INFO L93 Difference]: Finished difference Result 2827 states and 7572 transitions. [2021-07-09 16:14:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 16:14:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-07-09 16:14:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:08,204 INFO L225 Difference]: With dead ends: 2827 [2021-07-09 16:14:08,204 INFO L226 Difference]: Without dead ends: 2381 [2021-07-09 16:14:08,205 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-09 16:14:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-07-09 16:14:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1701. [2021-07-09 16:14:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 2.72) internal successors, (4624), 1700 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 4624 transitions. [2021-07-09 16:14:08,261 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 4624 transitions. Word has length 42 [2021-07-09 16:14:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:08,263 INFO L482 AbstractCegarLoop]: Abstraction has 1701 states and 4624 transitions. [2021-07-09 16:14:08,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 4624 transitions. [2021-07-09 16:14:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 16:14:08,266 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:08,266 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:14:08,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:14:08,267 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:08,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1458436131, now seen corresponding path program 2 times [2021-07-09 16:14:08,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:08,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960931401] [2021-07-09 16:14:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:08,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:08,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960931401] [2021-07-09 16:14:08,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960931401] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:14:08,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:14:08,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:14:08,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92360682] [2021-07-09 16:14:08,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:14:08,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:08,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:14:08,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:14:08,426 INFO L87 Difference]: Start difference. First operand 1701 states and 4624 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:08,515 INFO L93 Difference]: Finished difference Result 2480 states and 6588 transitions. [2021-07-09 16:14:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:14:08,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-07-09 16:14:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:08,526 INFO L225 Difference]: With dead ends: 2480 [2021-07-09 16:14:08,526 INFO L226 Difference]: Without dead ends: 2328 [2021-07-09 16:14:08,528 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-09 16:14:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-07-09 16:14:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1731. [2021-07-09 16:14:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1730 states have (on average 2.707514450867052) internal successors, (4684), 1730 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 4684 transitions. [2021-07-09 16:14:08,581 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 4684 transitions. Word has length 42 [2021-07-09 16:14:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:08,581 INFO L482 AbstractCegarLoop]: Abstraction has 1731 states and 4684 transitions. [2021-07-09 16:14:08,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 4684 transitions. [2021-07-09 16:14:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 16:14:08,584 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:08,584 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:14:08,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:14:08,585 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 695993441, now seen corresponding path program 3 times [2021-07-09 16:14:08,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:08,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393771130] [2021-07-09 16:14:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:08,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:08,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393771130] [2021-07-09 16:14:08,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393771130] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:14:08,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:14:08,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:14:08,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530160236] [2021-07-09 16:14:08,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:14:08,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:14:08,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:14:08,699 INFO L87 Difference]: Start difference. First operand 1731 states and 4684 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:08,866 INFO L93 Difference]: Finished difference Result 3149 states and 8380 transitions. [2021-07-09 16:14:08,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 16:14:08,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-07-09 16:14:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:08,879 INFO L225 Difference]: With dead ends: 3149 [2021-07-09 16:14:08,879 INFO L226 Difference]: Without dead ends: 2834 [2021-07-09 16:14:08,879 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:14:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-07-09 16:14:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1941. [2021-07-09 16:14:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 2.6943298969072167) internal successors, (5227), 1940 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 5227 transitions. [2021-07-09 16:14:08,927 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 5227 transitions. Word has length 42 [2021-07-09 16:14:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:08,928 INFO L482 AbstractCegarLoop]: Abstraction has 1941 states and 5227 transitions. [2021-07-09 16:14:08,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 5227 transitions. [2021-07-09 16:14:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 16:14:08,931 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:08,931 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:08,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:14:08,931 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:08,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1827767716, now seen corresponding path program 1 times [2021-07-09 16:14:08,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:08,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107621095] [2021-07-09 16:14:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:09,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:09,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107621095] [2021-07-09 16:14:09,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107621095] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:09,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818170772] [2021-07-09 16:14:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:09,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-09 16:14:09,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:09,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818170772] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:09,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:09,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-07-09 16:14:09,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992569430] [2021-07-09 16:14:09,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 16:14:09,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:09,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 16:14:09,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:14:09,505 INFO L87 Difference]: Start difference. First operand 1941 states and 5227 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:09,930 INFO L93 Difference]: Finished difference Result 4266 states and 11356 transitions. [2021-07-09 16:14:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 16:14:09,931 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-07-09 16:14:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:09,957 INFO L225 Difference]: With dead ends: 4266 [2021-07-09 16:14:09,957 INFO L226 Difference]: Without dead ends: 3529 [2021-07-09 16:14:09,957 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 384.7ms TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-07-09 16:14:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-07-09 16:14:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2150. [2021-07-09 16:14:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 2.7240577012563985) internal successors, (5854), 2149 states have internal predecessors, (5854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 5854 transitions. [2021-07-09 16:14:10,028 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 5854 transitions. Word has length 47 [2021-07-09 16:14:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:10,029 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 5854 transitions. [2021-07-09 16:14:10,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 5854 transitions. [2021-07-09 16:14:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 16:14:10,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:10,034 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:10,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-07-09 16:14:10,259 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 129141136, now seen corresponding path program 2 times [2021-07-09 16:14:10,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:10,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721107503] [2021-07-09 16:14:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:10,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:10,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721107503] [2021-07-09 16:14:10,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721107503] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:10,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447062732] [2021-07-09 16:14:10,346 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 [2021-07-09 16:14:10,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 16:14:10,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:10,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-09 16:14:10,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:10,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447062732] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:10,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:10,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-07-09 16:14:10,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516680614] [2021-07-09 16:14:10,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 16:14:10,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 16:14:10,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:14:10,675 INFO L87 Difference]: Start difference. First operand 2150 states and 5854 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:10,986 INFO L93 Difference]: Finished difference Result 3549 states and 9211 transitions. [2021-07-09 16:14:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-09 16:14:10,986 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-07-09 16:14:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:10,998 INFO L225 Difference]: With dead ends: 3549 [2021-07-09 16:14:10,998 INFO L226 Difference]: Without dead ends: 3157 [2021-07-09 16:14:10,998 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 298.4ms TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-07-09 16:14:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-07-09 16:14:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2260. [2021-07-09 16:14:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 2.691013722886233) internal successors, (6079), 2259 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 6079 transitions. [2021-07-09 16:14:11,062 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 6079 transitions. Word has length 47 [2021-07-09 16:14:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:11,063 INFO L482 AbstractCegarLoop]: Abstraction has 2260 states and 6079 transitions. [2021-07-09 16:14:11,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 6079 transitions. [2021-07-09 16:14:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 16:14:11,067 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:11,068 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:11,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:11,281 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:11,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:11,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1467133920, now seen corresponding path program 3 times [2021-07-09 16:14:11,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:11,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229258582] [2021-07-09 16:14:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:11,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:11,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229258582] [2021-07-09 16:14:11,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229258582] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:11,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380805166] [2021-07-09 16:14:11,384 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 [2021-07-09 16:14:11,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-09 16:14:11,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:11,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-09 16:14:11,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:11,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380805166] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:11,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:11,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-07-09 16:14:11,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738139606] [2021-07-09 16:14:11,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 16:14:11,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:11,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 16:14:11,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:14:11,645 INFO L87 Difference]: Start difference. First operand 2260 states and 6079 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:12,022 INFO L93 Difference]: Finished difference Result 4390 states and 11364 transitions. [2021-07-09 16:14:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 16:14:12,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-07-09 16:14:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:12,034 INFO L225 Difference]: With dead ends: 4390 [2021-07-09 16:14:12,034 INFO L226 Difference]: Without dead ends: 3998 [2021-07-09 16:14:12,035 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 290.9ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-07-09 16:14:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-07-09 16:14:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 2423. [2021-07-09 16:14:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 2.7345169281585466) internal successors, (6623), 2422 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-07-09 16:14:12,112 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-07-09 16:14:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:12,113 INFO L482 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-07-09 16:14:12,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-07-09 16:14:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 16:14:12,118 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:12,118 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:12,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-09 16:14:12,343 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash -480898396, now seen corresponding path program 4 times [2021-07-09 16:14:12,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:12,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076627769] [2021-07-09 16:14:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:12,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:12,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076627769] [2021-07-09 16:14:12,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076627769] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:12,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912239832] [2021-07-09 16:14:12,422 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:12,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 16:14:12,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:12,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-09 16:14:12,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:12,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912239832] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:12,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:12,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-07-09 16:14:12,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685131780] [2021-07-09 16:14:12,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 16:14:12,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 16:14:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:14:12,719 INFO L87 Difference]: Start difference. First operand 2423 states and 6623 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:13,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:13,403 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-07-09 16:14:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 16:14:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-07-09 16:14:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:13,417 INFO L225 Difference]: With dead ends: 5771 [2021-07-09 16:14:13,418 INFO L226 Difference]: Without dead ends: 4898 [2021-07-09 16:14:13,418 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 541.9ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 16:14:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-07-09 16:14:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-07-09 16:14:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2816 states have (on average 2.7169744318181817) internal successors, (7651), 2816 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-07-09 16:14:13,502 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-07-09 16:14:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:13,502 INFO L482 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-07-09 16:14:13,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2021-07-09 16:14:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-07-09 16:14:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:13,508 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:13,508 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:13,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:13,729 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:13,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1211930671, now seen corresponding path program 5 times [2021-07-09 16:14:13,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:13,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101617589] [2021-07-09 16:14:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:13,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:13,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101617589] [2021-07-09 16:14:13,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101617589] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:13,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444253821] [2021-07-09 16:14:13,857 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:13,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-07-09 16:14:13,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:13,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:13,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:14,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444253821] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:14,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:14,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:14,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20267546] [2021-07-09 16:14:14,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:14,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:14,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:14,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:14,108 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:14,361 INFO L93 Difference]: Finished difference Result 4116 states and 10667 transitions. [2021-07-09 16:14:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 16:14:14,361 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:14,372 INFO L225 Difference]: With dead ends: 4116 [2021-07-09 16:14:14,372 INFO L226 Difference]: Without dead ends: 3964 [2021-07-09 16:14:14,373 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 250.8ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-07-09 16:14:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2021-07-09 16:14:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 2842. [2021-07-09 16:14:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2841 states have (on average 2.7124252023935234) internal successors, (7706), 2841 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 7706 transitions. [2021-07-09 16:14:14,444 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 7706 transitions. Word has length 52 [2021-07-09 16:14:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:14,444 INFO L482 AbstractCegarLoop]: Abstraction has 2842 states and 7706 transitions. [2021-07-09 16:14:14,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 7706 transitions. [2021-07-09 16:14:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:14,450 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:14,450 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:14,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:14,674 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash 126062113, now seen corresponding path program 6 times [2021-07-09 16:14:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:14,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390891883] [2021-07-09 16:14:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:14,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:14,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390891883] [2021-07-09 16:14:14,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390891883] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:14,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138743139] [2021-07-09 16:14:14,766 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:14,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-07-09 16:14:14,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:14,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:14,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:15,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138743139] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:15,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:15,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:15,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453901412] [2021-07-09 16:14:15,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:15,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:15,039 INFO L87 Difference]: Start difference. First operand 2842 states and 7706 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:15,477 INFO L93 Difference]: Finished difference Result 4933 states and 12980 transitions. [2021-07-09 16:14:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 16:14:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:15,491 INFO L225 Difference]: With dead ends: 4933 [2021-07-09 16:14:15,491 INFO L226 Difference]: Without dead ends: 4629 [2021-07-09 16:14:15,491 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 385.1ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-07-09 16:14:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-07-09 16:14:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 3037. [2021-07-09 16:14:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 2.745718050065876) internal successors, (8336), 3036 states have internal predecessors, (8336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 8336 transitions. [2021-07-09 16:14:15,569 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 8336 transitions. Word has length 52 [2021-07-09 16:14:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:15,569 INFO L482 AbstractCegarLoop]: Abstraction has 3037 states and 8336 transitions. [2021-07-09 16:14:15,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 8336 transitions. [2021-07-09 16:14:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:15,575 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:15,575 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:15,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:15,789 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1821970203, now seen corresponding path program 7 times [2021-07-09 16:14:15,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:15,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590425803] [2021-07-09 16:14:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:15,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:15,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590425803] [2021-07-09 16:14:15,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590425803] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:15,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562624756] [2021-07-09 16:14:15,885 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:15,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:15,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:16,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562624756] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:16,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:16,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:16,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97214691] [2021-07-09 16:14:16,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:16,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:16,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:16,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:16,149 INFO L87 Difference]: Start difference. First operand 3037 states and 8336 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:16,789 INFO L93 Difference]: Finished difference Result 6026 states and 16276 transitions. [2021-07-09 16:14:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 16:14:16,790 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:16,804 INFO L225 Difference]: With dead ends: 6026 [2021-07-09 16:14:16,805 INFO L226 Difference]: Without dead ends: 5350 [2021-07-09 16:14:16,805 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 561.0ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 16:14:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-07-09 16:14:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 3186. [2021-07-09 16:14:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 2.778335949764521) internal successors, (8849), 3185 states have internal predecessors, (8849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 8849 transitions. [2021-07-09 16:14:16,899 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 8849 transitions. Word has length 52 [2021-07-09 16:14:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:16,899 INFO L482 AbstractCegarLoop]: Abstraction has 3186 states and 8849 transitions. [2021-07-09 16:14:16,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 8849 transitions. [2021-07-09 16:14:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:16,906 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:16,906 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:17,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:17,121 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash -737531317, now seen corresponding path program 1 times [2021-07-09 16:14:17,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:17,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127929246] [2021-07-09 16:14:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:17,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:17,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127929246] [2021-07-09 16:14:17,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127929246] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:17,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43419652] [2021-07-09 16:14:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:17,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:17,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:17,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43419652] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:17,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:17,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:17,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036207863] [2021-07-09 16:14:17,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:17,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:17,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:17,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:17,512 INFO L87 Difference]: Start difference. First operand 3186 states and 8849 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:17,738 INFO L93 Difference]: Finished difference Result 4617 states and 12244 transitions. [2021-07-09 16:14:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 16:14:17,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:17,756 INFO L225 Difference]: With dead ends: 4617 [2021-07-09 16:14:17,756 INFO L226 Difference]: Without dead ends: 4465 [2021-07-09 16:14:17,757 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 272.0ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-07-09 16:14:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2021-07-09 16:14:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 3236. [2021-07-09 16:14:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 2.7693972179289026) internal successors, (8959), 3235 states have internal predecessors, (8959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 8959 transitions. [2021-07-09 16:14:17,838 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 8959 transitions. Word has length 52 [2021-07-09 16:14:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:17,839 INFO L482 AbstractCegarLoop]: Abstraction has 3236 states and 8959 transitions. [2021-07-09 16:14:17,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 8959 transitions. [2021-07-09 16:14:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:17,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:17,845 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:18,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-07-09 16:14:18,061 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash -264203099, now seen corresponding path program 2 times [2021-07-09 16:14:18,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:18,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058809341] [2021-07-09 16:14:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:18,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:18,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058809341] [2021-07-09 16:14:18,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058809341] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:18,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946208840] [2021-07-09 16:14:18,188 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:18,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 16:14:18,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:18,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:18,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:18,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946208840] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:18,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:18,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:18,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552591331] [2021-07-09 16:14:18,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:18,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:18,444 INFO L87 Difference]: Start difference. First operand 3236 states and 8959 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:18,648 INFO L93 Difference]: Finished difference Result 4457 states and 11924 transitions. [2021-07-09 16:14:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 16:14:18,648 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:18,657 INFO L225 Difference]: With dead ends: 4457 [2021-07-09 16:14:18,657 INFO L226 Difference]: Without dead ends: 4305 [2021-07-09 16:14:18,658 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 248.0ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-07-09 16:14:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2021-07-09 16:14:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 3235. [2021-07-09 16:14:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 2.7680890538033394) internal successors, (8952), 3234 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 8952 transitions. [2021-07-09 16:14:18,734 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 8952 transitions. Word has length 52 [2021-07-09 16:14:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:18,735 INFO L482 AbstractCegarLoop]: Abstraction has 3235 states and 8952 transitions. [2021-07-09 16:14:18,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 8952 transitions. [2021-07-09 16:14:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:18,741 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:18,741 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:18,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:18,961 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:18,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:18,961 INFO L82 PathProgramCache]: Analyzing trace with hash -817398155, now seen corresponding path program 3 times [2021-07-09 16:14:18,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:18,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205807225] [2021-07-09 16:14:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:19,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:19,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205807225] [2021-07-09 16:14:19,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205807225] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:19,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132900460] [2021-07-09 16:14:19,058 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:19,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-09 16:14:19,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:19,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:19,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:19,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132900460] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:19,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:19,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:19,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730805017] [2021-07-09 16:14:19,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:19,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:19,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:19,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:19,335 INFO L87 Difference]: Start difference. First operand 3235 states and 8952 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:19,730 INFO L93 Difference]: Finished difference Result 5327 states and 14287 transitions. [2021-07-09 16:14:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 16:14:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:19,739 INFO L225 Difference]: With dead ends: 5327 [2021-07-09 16:14:19,739 INFO L226 Difference]: Without dead ends: 5175 [2021-07-09 16:14:19,739 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 383.4ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-07-09 16:14:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2021-07-09 16:14:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 3363. [2021-07-09 16:14:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.796252230814991) internal successors, (9401), 3362 states have internal predecessors, (9401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 9401 transitions. [2021-07-09 16:14:19,825 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 9401 transitions. Word has length 52 [2021-07-09 16:14:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:19,825 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 9401 transitions. [2021-07-09 16:14:19,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 9401 transitions. [2021-07-09 16:14:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:14:19,831 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:19,831 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:20,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:20,046 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1529536825, now seen corresponding path program 4 times [2021-07-09 16:14:20,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:20,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131198499] [2021-07-09 16:14:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:20,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:20,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131198499] [2021-07-09 16:14:20,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131198499] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:20,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956255222] [2021-07-09 16:14:20,126 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:20,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 16:14:20,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:20,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:14:20,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:20,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956255222] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:20,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:20,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-09 16:14:20,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066595850] [2021-07-09 16:14:20,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:14:20,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:20,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:14:20,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:14:20,455 INFO L87 Difference]: Start difference. First operand 3363 states and 9401 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:21,103 INFO L93 Difference]: Finished difference Result 6683 states and 18179 transitions. [2021-07-09 16:14:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 16:14:21,103 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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 52 [2021-07-09 16:14:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:21,117 INFO L225 Difference]: With dead ends: 6683 [2021-07-09 16:14:21,118 INFO L226 Difference]: Without dead ends: 6253 [2021-07-09 16:14:21,119 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 543.9ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 16:14:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2021-07-09 16:14:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3417. [2021-07-09 16:14:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-07-09 16:14:21,249 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-07-09 16:14:21,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:21,249 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-07-09 16:14:21,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2021-07-09 16:14:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-07-09 16:14:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-09 16:14:21,255 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:21,255 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:21,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-07-09 16:14:21,480 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:21,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1798256098, now seen corresponding path program 8 times [2021-07-09 16:14:21,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:21,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707756980] [2021-07-09 16:14:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:21,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:21,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707756980] [2021-07-09 16:14:21,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707756980] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:21,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473396600] [2021-07-09 16:14:21,587 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 [2021-07-09 16:14:21,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 16:14:21,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-09 16:14:21,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:21,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473396600] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:21,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:14:21,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 16:14:21,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912815920] [2021-07-09 16:14:21,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 16:14:21,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:14:21,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 16:14:21,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-07-09 16:14:21,878 INFO L87 Difference]: Start difference. First operand 3417 states and 9458 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:14:22,150 INFO L93 Difference]: Finished difference Result 4904 states and 12966 transitions. [2021-07-09 16:14:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 16:14:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-09 16:14:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:14:22,159 INFO L225 Difference]: With dead ends: 4904 [2021-07-09 16:14:22,159 INFO L226 Difference]: Without dead ends: 4752 [2021-07-09 16:14:22,159 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 287.6ms TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2021-07-09 16:14:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-07-09 16:14:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 3417. [2021-07-09 16:14:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-07-09 16:14:22,260 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 57 [2021-07-09 16:14:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:14:22,260 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-07-09 16:14:22,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:14:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-07-09 16:14:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-09 16:14:22,265 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:14:22,265 INFO L508 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, 1, 1, 1, 1] [2021-07-09 16:14:22,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-07-09 16:14:22,493 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:14:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:14:22,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1035813408, now seen corresponding path program 9 times [2021-07-09 16:14:22,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:14:22,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962438585] [2021-07-09 16:14:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:14:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:14:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:14:22,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:14:22,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962438585] [2021-07-09 16:14:22,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962438585] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:14:22,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877155033] [2021-07-09 16:14:22,604 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:14:22,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-09 16:14:22,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:14:22,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-09 16:14:22,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:14:23,308 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 998 DAG size of output: 1001 Received shutdown request... [2021-07-09 16:28:41,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:28:41,832 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 16:28:41,834 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:28:41,835 WARN L196 ceAbstractionStarter]: Timeout [2021-07-09 16:28:41,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:28:41 BasicIcfg [2021-07-09 16:28:41,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:28:41,836 INFO L168 Benchmark]: Toolchain (without parser) took 876901.98 ms. Allocated memory was 191.9 MB in the beginning and 1.1 GB in the end (delta: 886.0 MB). Free memory was 154.3 MB in the beginning and 626.7 MB in the end (delta: -472.3 MB). Peak memory consumption was 678.3 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:41,836 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 191.9 MB. Free memory was 172.8 MB in the beginning and 172.6 MB in the end (delta: 139.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:28:41,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.04 ms. Allocated memory is still 191.9 MB. Free memory was 154.0 MB in the beginning and 165.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:41,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.35 ms. Allocated memory is still 191.9 MB. Free memory was 165.0 MB in the beginning and 163.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:41,836 INFO L168 Benchmark]: Boogie Preprocessor took 34.06 ms. Allocated memory is still 191.9 MB. Free memory was 163.0 MB in the beginning and 161.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:41,836 INFO L168 Benchmark]: RCFGBuilder took 475.72 ms. Allocated memory is still 191.9 MB. Free memory was 161.9 MB in the beginning and 139.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:41,837 INFO L168 Benchmark]: TraceAbstraction took 875805.94 ms. Allocated memory was 191.9 MB in the beginning and 1.1 GB in the end (delta: 886.0 MB). Free memory was 139.4 MB in the beginning and 626.7 MB in the end (delta: -487.3 MB). Peak memory consumption was 663.4 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:41,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 191.9 MB. Free memory was 172.8 MB in the beginning and 172.6 MB in the end (delta: 139.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 524.04 ms. Allocated memory is still 191.9 MB. Free memory was 154.0 MB in the beginning and 165.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.35 ms. Allocated memory is still 191.9 MB. Free memory was 165.0 MB in the beginning and 163.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.06 ms. Allocated memory is still 191.9 MB. Free memory was 163.0 MB in the beginning and 161.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.72 ms. Allocated memory is still 191.9 MB. Free memory was 161.9 MB in the beginning and 139.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 875805.94 ms. Allocated memory was 191.9 MB in the beginning and 1.1 GB in the end (delta: 886.0 MB). Free memory was 139.4 MB in the beginning and 626.7 MB in the end (delta: -487.3 MB). Peak memory consumption was 663.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 875691.6ms, OverallIterations: 19, TraceHistogramMax: 4, EmptinessCheckTime: 102.5ms, AutomataDifference: 6159.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 80.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1736 SDtfs, 8483 SDslu, 12366 SDs, 0 SdLazy, 2056 SolverSat, 505 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1355.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 981 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 422 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3326 ImplicationChecksByTransitivity, 5122.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3417occurred in iteration=17, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1413.1ms AutomataMinimizationTime, 18 MinimizatonAttempts, 22422 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 170.6ms SsaConstructionTime, 454.2ms SatisfiabilityAnalysisTime, 4441.6ms InterpolantComputationTime, 1450 NumberOfCodeBlocks, 1450 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1420 ConstructedInterpolants, 0 QuantifiedInterpolants, 9453 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1560 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 0/144 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