/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 04:12:53,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 04:12:53,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 04:12:53,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 04:12:53,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 04:12:53,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 04:12:53,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 04:12:53,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 04:12:53,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 04:12:53,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 04:12:53,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 04:12:53,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 04:12:53,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 04:12:53,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 04:12:53,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 04:12:53,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 04:12:53,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 04:12:53,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 04:12:53,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 04:12:53,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 04:12:53,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 04:12:53,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 04:12:53,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 04:12:53,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 04:12:53,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 04:12:53,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 04:12:53,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 04:12:53,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 04:12:53,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 04:12:53,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 04:12:53,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 04:12:53,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 04:12:53,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 04:12:53,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 04:12:53,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 04:12:53,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 04:12:53,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 04:12:53,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 04:12:53,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 04:12:53,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 04:12:53,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 04:12:53,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 04:12:53,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 04:12:53,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 04:12:53,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 04:12:53,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 04:12:53,529 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 04:12:53,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 04:12:53,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 04:12:53,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 04:12:53,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 04:12:53,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 04:12:53,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 04:12:53,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 04:12:53,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 04:12:53,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 04:12:53,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 04:12:53,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 04:12:53,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 04:12:53,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 04:12:53,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 04:12:53,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 04:12:53,811 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 04:12:53,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound5.c [2021-05-06 04:12:53,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a95325c/0e528df5eb2d4d51a79b634926122a31/FLAGcab8be209 [2021-05-06 04:12:54,191 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 04:12:54,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound5.c [2021-05-06 04:12:54,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a95325c/0e528df5eb2d4d51a79b634926122a31/FLAGcab8be209 [2021-05-06 04:12:54,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a95325c/0e528df5eb2d4d51a79b634926122a31 [2021-05-06 04:12:54,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 04:12:54,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 04:12:54,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 04:12:54,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 04:12:54,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 04:12:54,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362972d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54, skipping insertion in model container [2021-05-06 04:12:54,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 04:12:54,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 04:12:54,726 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound5.c[573,586] [2021-05-06 04:12:54,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 04:12:54,743 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 04:12:54,751 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound5.c[573,586] [2021-05-06 04:12:54,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 04:12:54,772 INFO L208 MainTranslator]: Completed translation [2021-05-06 04:12:54,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54 WrapperNode [2021-05-06 04:12:54,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 04:12:54,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 04:12:54,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 04:12:54,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 04:12:54,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (1/1) ... [2021-05-06 04:12:54,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 04:12:54,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 04:12:54,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 04:12:54,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 04:12:54,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (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 [2021-05-06 04:12:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 04:12:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 04:12:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 04:12:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 04:12:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 04:12:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 04:12:54,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 04:12:54,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 04:12:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 04:12:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 04:12:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 04:12:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 04:12:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 04:12:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 04:12:55,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 04:12:55,077 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 04:12:55,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 04:12:55 BoogieIcfgContainer [2021-05-06 04:12:55,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 04:12:55,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 04:12:55,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 04:12:55,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 04:12:55,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 04:12:54" (1/3) ... [2021-05-06 04:12:55,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2526e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 04:12:55, skipping insertion in model container [2021-05-06 04:12:55,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:54" (2/3) ... [2021-05-06 04:12:55,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2526e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 04:12:55, skipping insertion in model container [2021-05-06 04:12:55,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 04:12:55" (3/3) ... [2021-05-06 04:12:55,083 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound5.c [2021-05-06 04:12:55,087 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 04:12:55,090 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 04:12:55,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 04:12:55,119 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 04:12:55,119 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 04:12:55,119 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 04:12:55,119 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 04:12:55,120 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 04:12:55,120 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 04:12:55,120 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 04:12:55,120 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 04:12:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 04:12:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 04:12:55,150 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:55,150 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:55,151 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash -786972844, now seen corresponding path program 1 times [2021-05-06 04:12:55,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:55,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916680540] [2021-05-06 04:12:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 04:12:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 04:12:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 04:12:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:55,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:55,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916680540] [2021-05-06 04:12:55,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916680540] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:12:55,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:12:55,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 04:12:55,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763639063] [2021-05-06 04:12:55,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 04:12:55,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 04:12:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 04:12:55,420 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 04:12:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:55,499 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2021-05-06 04:12:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 04:12:55,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 04:12:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:55,506 INFO L225 Difference]: With dead ends: 51 [2021-05-06 04:12:55,506 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 04:12:55,509 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 04:12:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 04:12:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-06 04:12:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 04:12:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-05-06 04:12:55,546 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2021-05-06 04:12:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:55,547 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-05-06 04:12:55,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 04:12:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-05-06 04:12:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 04:12:55,548 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:55,548 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:55,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 04:12:55,549 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:55,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1131020600, now seen corresponding path program 1 times [2021-05-06 04:12:55,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:55,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385619724] [2021-05-06 04:12:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:55,580 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:55,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572210719] [2021-05-06 04:12:55,581 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 [2021-05-06 04:12:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:55,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 04:12:55,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:55,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:55,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:55,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385619724] [2021-05-06 04:12:55,792 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:55,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572210719] [2021-05-06 04:12:55,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572210719] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:12:55,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:12:55,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 04:12:55,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134056362] [2021-05-06 04:12:55,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 04:12:55,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:55,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 04:12:55,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 04:12:55,795 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 04:12:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:55,828 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-05-06 04:12:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 04:12:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-05-06 04:12:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:55,829 INFO L225 Difference]: With dead ends: 35 [2021-05-06 04:12:55,830 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 04:12:55,830 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 04:12:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 04:12:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-05-06 04:12:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 04:12:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-06 04:12:55,836 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2021-05-06 04:12:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:55,837 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-06 04:12:55,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 04:12:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-06 04:12:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 04:12:55,837 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:55,838 INFO L523 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] [2021-05-06 04:12:56,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 04:12:56,042 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:56,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1991967029, now seen corresponding path program 1 times [2021-05-06 04:12:56,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:56,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683226293] [2021-05-06 04:12:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:56,050 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:56,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644372701] [2021-05-06 04:12:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:56,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 04:12:56,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:56,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:56,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:56,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683226293] [2021-05-06 04:12:56,199 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:56,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644372701] [2021-05-06 04:12:56,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644372701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:56,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:56,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 04:12:56,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039269944] [2021-05-06 04:12:56,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 04:12:56,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 04:12:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 04:12:56,202 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 04:12:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:56,279 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-06 04:12:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 04:12:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2021-05-06 04:12:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:56,280 INFO L225 Difference]: With dead ends: 30 [2021-05-06 04:12:56,280 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 04:12:56,282 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 04:12:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 04:12:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 04:12:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 04:12:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 04:12:56,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-05-06 04:12:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:56,283 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 04:12:56,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 04:12:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 04:12:56,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 04:12:56,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:56,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 04:12:56,609 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2021-05-06 04:12:56,609 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2021-05-06 04:12:56,609 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2021-05-06 04:12:56,609 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 04:12:56,610 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* main_~y1~0 main_~x2~0))) (and (= main_~x1~0 (+ main_~y2~0 .cse0)) (= (+ main_~y2~0 main_~y3~0 .cse0) main_~x1~0))) [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 22 51) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 22 51) no Hoare annotation was computed. [2021-05-06 04:12:56,610 INFO L198 CegarLoopUtils]: For program point L40(lines 40 47) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L194 CegarLoopUtils]: At program point L40-2(lines 35 48) the Hoare annotation is: (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0) [2021-05-06 04:12:56,611 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0) [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 48) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 22 51) the Hoare annotation is: true [2021-05-06 04:12:56,611 INFO L201 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-05-06 04:12:56,611 INFO L201 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point L49(line 49) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-05-06 04:12:56,611 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-05-06 04:12:56,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 04:12:56 BoogieIcfgContainer [2021-05-06 04:12:56,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 04:12:56,621 INFO L168 Benchmark]: Toolchain (without parser) took 1992.58 ms. Allocated memory is still 181.4 MB. Free memory was 145.5 MB in the beginning and 128.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-05-06 04:12:56,621 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 181.4 MB. Free memory is still 161.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 04:12:56,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.33 ms. Allocated memory is still 181.4 MB. Free memory was 145.2 MB in the beginning and 135.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 04:12:56,621 INFO L168 Benchmark]: Boogie Preprocessor took 59.73 ms. Allocated memory is still 181.4 MB. Free memory was 135.6 MB in the beginning and 165.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2021-05-06 04:12:56,621 INFO L168 Benchmark]: RCFGBuilder took 244.21 ms. Allocated memory is still 181.4 MB. Free memory was 165.0 MB in the beginning and 149.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 04:12:56,621 INFO L168 Benchmark]: TraceAbstraction took 1541.50 ms. Allocated memory is still 181.4 MB. Free memory was 149.3 MB in the beginning and 128.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2021-05-06 04:12:56,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 181.4 MB. Free memory is still 161.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 142.33 ms. Allocated memory is still 181.4 MB. Free memory was 145.2 MB in the beginning and 135.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.73 ms. Allocated memory is still 181.4 MB. Free memory was 135.6 MB in the beginning and 165.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 244.21 ms. Allocated memory is still 181.4 MB. Free memory was 165.0 MB in the beginning and 149.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1541.50 ms. Allocated memory is still 181.4 MB. Free memory was 149.3 MB in the beginning and 128.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1371.7ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 24.0ms, AutomataDifference: 213.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 119.2ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 34 SDslu, 155 SDs, 0 SdLazy, 77 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 112.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 17 PreInvPairs, 23 NumberOfFragments, 70 HoareAnnotationTreeSize, 17 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 42.8ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 250 FormulaSimplificationTreeSizeReductionInter, 70.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.9ms SsaConstructionTime, 107.5ms SatisfiabilityAnalysisTime, 353.2ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 4 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 13/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: y2 + y3 + y1 * x2 == x1 RESULT: Ultimate proved your program to be correct! Received shutdown request...