/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/geo3-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:24:02,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:24:02,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:24:02,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 15:24:02,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 15:24:02,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 15:24:02,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 15:24:02,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 15:24:02,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 15:24:02,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 15:24:02,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 15:24:02,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 15:24:02,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:24:02,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:24:02,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:24:02,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:24:02,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:24:02,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:24:02,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:24:02,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:24:02,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:24:02,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:24:02,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:24:02,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:24:02,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 15:24:02,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 15:24:02,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 15:24:02,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 15:24:02,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 15:24:02,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 15:24:02,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 15:24:02,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 15:24:02,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 15:24:02,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 15:24:02,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 15:24:02,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 15:24:02,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 15:24:02,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 15:24:02,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:24:02,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:24:02,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:24:02,689 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 [2021-05-02 15:24:02,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:24:02,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:24:02,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:24:02,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:24:02,716 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:24:02,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:24:02,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:24:02,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:24:02,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:24:02,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:24:02,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:24:02,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:24:02,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:24:02,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:24:02,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:24:02,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:24:02,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:24:02,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:24:02,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:24:02,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:24:02,986 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:24:02,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c [2021-05-02 15:24:03,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7797d15e3/e157825f7f194c75a72cb5f0dab31dfe/FLAG741a0b591 [2021-05-02 15:24:03,386 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:24:03,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c [2021-05-02 15:24:03,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7797d15e3/e157825f7f194c75a72cb5f0dab31dfe/FLAG741a0b591 [2021-05-02 15:24:03,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7797d15e3/e157825f7f194c75a72cb5f0dab31dfe [2021-05-02 15:24:03,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:24:03,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:24:03,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:24:03,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:24:03,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:24:03,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:24:03" (1/1) ... [2021-05-02 15:24:03,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c3bbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:03, skipping insertion in model container [2021-05-02 15:24:03,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:24:03" (1/1) ... [2021-05-02 15:24:03,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:24:03,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:24:03,950 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/geo3-ll_valuebound10.c[525,538] [2021-05-02 15:24:03,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:24:03,968 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:24:04,011 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/geo3-ll_valuebound10.c[525,538] [2021-05-02 15:24:04,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:24:04,038 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:24:04,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04 WrapperNode [2021-05-02 15:24:04,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:24:04,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:24:04,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:24:04,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:24:04,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (1/1) ... [2021-05-02 15:24:04,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:24:04,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:24:04,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:24:04,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:24:04,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (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 [2021-05-02 15:24:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:24:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:24:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:24:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:24:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:24:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:24:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:24:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:24:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:24:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:24:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:24:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:24:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:24:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:24:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:24:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:24:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:24:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:24:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:24:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:24:04,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:24:04,378 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:24:04,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:24:04 BoogieIcfgContainer [2021-05-02 15:24:04,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:24:04,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:24:04,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:24:04,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:24:04,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:24:03" (1/3) ... [2021-05-02 15:24:04,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414360d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:24:04, skipping insertion in model container [2021-05-02 15:24:04,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:24:04" (2/3) ... [2021-05-02 15:24:04,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414360d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:24:04, skipping insertion in model container [2021-05-02 15:24:04,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:24:04" (3/3) ... [2021-05-02 15:24:04,384 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound10.c [2021-05-02 15:24:04,387 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:24:04,390 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:24:04,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:24:04,421 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:24:04,421 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:24:04,421 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:24:04,421 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:24:04,422 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:24:04,422 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:24:04,422 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:24:04,422 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:24:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 15:24:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 15:24:04,439 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:24:04,439 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:24:04,440 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:24:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:24:04,444 INFO L82 PathProgramCache]: Analyzing trace with hash -779299010, now seen corresponding path program 1 times [2021-05-02 15:24:04,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:24:04,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843453403] [2021-05-02 15:24:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:24:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:24:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:24:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:24:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-02 15:24:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 15:24:04,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:24:04,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843453403] [2021-05-02 15:24:04,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843453403] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:24:04,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:24:04,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:24:04,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589087221] [2021-05-02 15:24:04,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:24:04,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:24:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:24:04,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:24:04,654 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 15:24:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:24:04,719 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-05-02 15:24:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:24:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 15:24:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:24:04,726 INFO L225 Difference]: With dead ends: 55 [2021-05-02 15:24:04,726 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 15:24:04,729 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:24:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 15:24:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-02 15:24:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 15:24:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-05-02 15:24:04,759 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2021-05-02 15:24:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:24:04,759 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-05-02 15:24:04,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 15:24:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-05-02 15:24:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 15:24:04,761 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:24:04,761 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:24:04,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:24:04,762 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:24:04,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:24:04,763 INFO L82 PathProgramCache]: Analyzing trace with hash -963850242, now seen corresponding path program 1 times [2021-05-02 15:24:04,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:24:04,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132662333] [2021-05-02 15:24:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:24:04,789 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:24:04,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570237576] [2021-05-02 15:24:04,789 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 [2021-05-02 15:24:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:04,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 15:24:04,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:24:05,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 15:24:05,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:24:05,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132662333] [2021-05-02 15:24:05,177 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:24:05,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570237576] [2021-05-02 15:24:05,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570237576] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:24:05,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:24:05,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:24:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971223274] [2021-05-02 15:24:05,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:24:05,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:24:05,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:24:05,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:24:05,179 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 15:24:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:24:05,259 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-05-02 15:24:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:24:05,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 15:24:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:24:05,260 INFO L225 Difference]: With dead ends: 36 [2021-05-02 15:24:05,260 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 15:24:05,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:24:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 15:24:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 15:24:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 15:24:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-05-02 15:24:05,266 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2021-05-02 15:24:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:24:05,267 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-05-02 15:24:05,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 15:24:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-05-02 15:24:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 15:24:05,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:24:05,268 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:24:05,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:24:05,486 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:24:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:24:05,487 INFO L82 PathProgramCache]: Analyzing trace with hash -425626518, now seen corresponding path program 1 times [2021-05-02 15:24:05,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:24:05,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209358812] [2021-05-02 15:24:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:24:05,520 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:24:05,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982647492] [2021-05-02 15:24:05,520 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 [2021-05-02 15:24:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:24:05,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 15:24:05,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:24:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 15:24:05,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:24:05,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209358812] [2021-05-02 15:24:05,803 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:24:05,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982647492] [2021-05-02 15:24:05,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982647492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:24:05,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:24:05,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 15:24:05,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9100129] [2021-05-02 15:24:05,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 15:24:05,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:24:05,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 15:24:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:24:05,805 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 15:24:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:24:05,991 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-02 15:24:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 15:24:05,993 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 15:24:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:24:05,994 INFO L225 Difference]: With dead ends: 43 [2021-05-02 15:24:05,994 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 15:24:05,994 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:24:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 15:24:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 15:24:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 15:24:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-02 15:24:06,002 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2021-05-02 15:24:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:24:06,002 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-02 15:24:06,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 15:24:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-02 15:24:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 15:24:06,003 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:24:06,003 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:24:06,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:24:06,220 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:24:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:24:06,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1540046462, now seen corresponding path program 2 times [2021-05-02 15:24:06,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:24:06,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140041733] [2021-05-02 15:24:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:24:06,233 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:24:06,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401767588] [2021-05-02 15:24:06,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:24:06,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:24:06,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:24:06,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 15:24:06,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:24:06,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 15:24:06,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:24:06,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140041733] [2021-05-02 15:24:06,729 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:24:06,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401767588] [2021-05-02 15:24:06,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401767588] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:24:06,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:24:06,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 15:24:06,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498082714] [2021-05-02 15:24:06,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 15:24:06,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:24:06,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 15:24:06,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:24:06,730 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 15:24:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:24:08,859 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 15:24:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:24:08,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 43 [2021-05-02 15:24:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:24:08,861 INFO L225 Difference]: With dead ends: 50 [2021-05-02 15:24:08,861 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 15:24:08,861 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 269.0ms TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:24:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 15:24:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 15:24:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 15:24:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-05-02 15:24:08,867 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 43 [2021-05-02 15:24:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:24:08,867 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-05-02 15:24:08,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 15:24:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-05-02 15:24:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 15:24:08,868 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:24:08,868 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:24:09,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:24:09,088 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:24:09,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:24:09,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1099019754, now seen corresponding path program 3 times [2021-05-02 15:24:09,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:24:09,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289065695] [2021-05-02 15:24:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:24:09,100 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:24:09,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621985388] [2021-05-02 15:24:09,100 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 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 [2021-05-02 15:24:09,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 15:24:09,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:24:09,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 15:24:09,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:24:09,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:09,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 15:24:09,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:24:09,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289065695] [2021-05-02 15:24:09,380 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:24:09,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621985388] [2021-05-02 15:24:09,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621985388] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:24:09,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:24:09,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 15:24:09,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712412447] [2021-05-02 15:24:09,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:24:09,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:24:09,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:24:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:24:09,381 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-02 15:24:15,646 WARN L205 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 15:24:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:24:17,667 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 15:24:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:24:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2021-05-02 15:24:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:24:17,668 INFO L225 Difference]: With dead ends: 50 [2021-05-02 15:24:17,668 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:24:17,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4340.0ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:24:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:24:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:24:17,668 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) [2021-05-02 15:24:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:24:17,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-05-02 15:24:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:24:17,669 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:24:17,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-02 15:24:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:24:17,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:24:17,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:24:17,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:24:57,884 WARN L205 SmtUtils]: Spent 39.86 s on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2021-05-02 15:24:59,130 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-05-02 15:25:00,751 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:25:00,753 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|)) [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:25:00,753 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:25:00,753 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 0 main_~z~0) (<= main_~z~0 10)) [2021-05-02 15:25:00,754 INFO L198 CegarLoopUtils]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 main_~z~0) (<= main_~z~0 10)) [2021-05-02 15:25:00,754 INFO L198 CegarLoopUtils]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L201 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-05-02 15:25:00,754 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 21 48) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L198 CegarLoopUtils]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L198 CegarLoopUtils]: For program point L46(line 46) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 21 48) no Hoare annotation was computed. [2021-05-02 15:25:00,754 INFO L194 CegarLoopUtils]: At program point L36-2(lines 36 45) the Hoare annotation is: (let ((.cse3 (<= 0 main_~z~0)) (.cse4 (<= main_~z~0 10))) (or (and (let ((.cse2 (= main_~z~0 0))) (or (let ((.cse1 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse0 (div .cse1 main_~z~0))) (= (+ (* main_~z~0 .cse0) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse0))) (= (mod .cse1 main_~z~0) 0) (not .cse2) (= (mod main_~y~0 main_~z~0) 0))) (and (= main_~a~0 main_~x~0) .cse2))) .cse3 .cse4) (and (= (+ main_~x~0 (* main_~y~0 main_~az~0)) (+ main_~a~0 (* main_~x~0 main_~z~0))) (= main_~y~0 1) (= (* main_~z~0 main_~a~0) main_~az~0) .cse3 .cse4))) [2021-05-02 15:25:00,754 INFO L194 CegarLoopUtils]: At program point L36-3(lines 36 45) the Hoare annotation is: (let ((.cse0 (* main_~z~0 main_~a~0))) (let ((.cse1 (= .cse0 main_~az~0)) (.cse4 (= main_~a~0 main_~x~0)) (.cse2 (<= 0 main_~z~0)) (.cse3 (<= main_~z~0 10))) (or (and (= main_~x~0 (+ .cse0 main_~a~0 (* main_~z~0 main_~z~0 main_~a~0))) .cse1 .cse2 .cse3 (= main_~y~0 (* main_~z~0 main_~z~0))) (and .cse4 (= main_~y~0 1) .cse1 .cse2 .cse3) (and (= (+ main_~x~0 (* main_~y~0 main_~az~0)) (+ main_~a~0 (* main_~x~0 main_~z~0))) (let ((.cse7 (= main_~z~0 0))) (or (let ((.cse6 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse5 (div .cse6 main_~z~0))) (= (+ (* main_~z~0 .cse5) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse5))) (= (mod .cse6 main_~z~0) 0) (not .cse7) (= (mod main_~y~0 main_~z~0) 0))) (and .cse4 .cse7))) .cse2 .cse3)))) [2021-05-02 15:25:00,754 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 21 48) the Hoare annotation is: true [2021-05-02 15:25:00,755 INFO L194 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (let ((.cse3 (<= 0 main_~z~0)) (.cse4 (<= main_~z~0 10))) (or (and (let ((.cse2 (= main_~z~0 0))) (or (let ((.cse1 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse0 (div .cse1 main_~z~0))) (= (+ (* main_~z~0 .cse0) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse0))) (= (mod .cse1 main_~z~0) 0) (not .cse2) (= (mod main_~y~0 main_~z~0) 0))) (and (= main_~a~0 main_~x~0) .cse2))) .cse3 .cse4) (and (= (+ main_~x~0 (* main_~y~0 main_~az~0)) (+ main_~a~0 (* main_~x~0 main_~z~0))) (= main_~y~0 1) (= (* main_~z~0 main_~a~0) main_~az~0) .cse3 .cse4))) [2021-05-02 15:25:00,755 INFO L198 CegarLoopUtils]: For program point L37-1(lines 36 45) no Hoare annotation was computed. [2021-05-02 15:25:00,755 INFO L198 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-05-02 15:25:00,755 INFO L198 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-05-02 15:25:00,755 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-05-02 15:25:00,755 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:25:00,755 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:25:00,755 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-05-02 15:25:00,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:25:00 BoogieIcfgContainer [2021-05-02 15:25:00,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:25:00,769 INFO L168 Benchmark]: Toolchain (without parser) took 56954.82 ms. Allocated memory was 218.1 MB in the beginning and 291.5 MB in the end (delta: 73.4 MB). Free memory was 183.2 MB in the beginning and 135.7 MB in the end (delta: 47.5 MB). Peak memory consumption was 121.6 MB. Max. memory is 8.0 GB. [2021-05-02 15:25:00,770 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 218.1 MB. Free memory is still 199.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:25:00,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.68 ms. Allocated memory is still 218.1 MB. Free memory was 183.0 MB in the beginning and 201.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 15:25:00,770 INFO L168 Benchmark]: Boogie Preprocessor took 38.06 ms. Allocated memory is still 218.1 MB. Free memory was 201.2 MB in the beginning and 199.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:25:00,771 INFO L168 Benchmark]: RCFGBuilder took 300.71 ms. Allocated memory is still 218.1 MB. Free memory was 199.6 MB in the beginning and 185.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:25:00,771 INFO L168 Benchmark]: TraceAbstraction took 56389.32 ms. Allocated memory was 218.1 MB in the beginning and 291.5 MB in the end (delta: 73.4 MB). Free memory was 184.4 MB in the beginning and 135.7 MB in the end (delta: 48.8 MB). Peak memory consumption was 122.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:25:00,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 218.1 MB. Free memory is still 199.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 222.68 ms. Allocated memory is still 218.1 MB. Free memory was 183.0 MB in the beginning and 201.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.06 ms. Allocated memory is still 218.1 MB. Free memory was 201.2 MB in the beginning and 199.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 300.71 ms. Allocated memory is still 218.1 MB. Free memory was 199.6 MB in the beginning and 185.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56389.32 ms. Allocated memory was 218.1 MB in the beginning and 291.5 MB in the end (delta: 73.4 MB). Free memory was 184.4 MB in the beginning and 135.7 MB in the end (delta: 48.8 MB). Peak memory consumption was 122.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13458.0ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 10.6ms, AutomataDifference: 10777.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 42875.3ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 118 SDtfs, 92 SDslu, 481 SDs, 0 SdLazy, 359 SolverSat, 37 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6306.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4827.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 25 PreInvPairs, 39 NumberOfFragments, 340 HoareAnnotationTreeSize, 25 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 112.3ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 1003 FormulaSimplificationTreeSizeReductionInter, 42749.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 71.1ms SsaConstructionTime, 125.6ms SatisfiabilityAnalysisTime, 1186.2ms InterpolantComputationTime, 187 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 785 SizeOfPredicates, 13 NumberOfNonLiveVariables, 575 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 81/112 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: 36]: Loop Invariant Derived loop invariant: ((((((z * ((x + a * -1) / z) + a == az * (y / z) + (x + a * -1) / z && (x + a * -1) % z == 0) && !(z == 0)) && y % z == 0) || (a == x && z == 0)) && 0 <= z) && z <= 10) || ((((x + y * az == a + x * z && y == 1) && z * a == az) && 0 <= z) && z <= 10) RESULT: Ultimate proved your program to be correct! Received shutdown request...