/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_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 16:14:05,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 16:14:05,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 16:14:05,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 16:14:05,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 16:14:05,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 16:14:05,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 16:14:05,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 16:14:05,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 16:14:05,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 16:14:05,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 16:14:05,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 16:14:05,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 16:14:05,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 16:14:05,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 16:14:05,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 16:14:05,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 16:14:05,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 16:14:05,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 16:14:05,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 16:14:05,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 16:14:05,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 16:14:05,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 16:14:05,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 16:14:05,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 16:14:05,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 16:14:05,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 16:14:05,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 16:14:05,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 16:14:06,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 16:14:06,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 16:14:06,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 16:14:06,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 16:14:06,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 16:14:06,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 16:14:06,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 16:14:06,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 16:14:06,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 16:14:06,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 16:14:06,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 16:14:06,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 16:14:06,004 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 16:14:06,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 16:14:06,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 16:14:06,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 16:14:06,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 16:14:06,020 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 16:14:06,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 16:14:06,021 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 16:14:06,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 16:14:06,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 16:14:06,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 16:14:06,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 16:14:06,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 16:14:06,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 16:14:06,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 16:14:06,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 16:14:06,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 16:14:06,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 16:14:06,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 16:14:06,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 16:14:06,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 16:14:06,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 16:14:06,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 16:14:06,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 16:14:06,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 16:14:06,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 16:14:06,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 16:14:06,257 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 16:14:06,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound10.c [2021-05-02 16:14:06,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eae1460d/a012a19b160e4c3f80ac283dab364e27/FLAG6960bd9e2 [2021-05-02 16:14:06,662 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 16:14:06,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound10.c [2021-05-02 16:14:06,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eae1460d/a012a19b160e4c3f80ac283dab364e27/FLAG6960bd9e2 [2021-05-02 16:14:06,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eae1460d/a012a19b160e4c3f80ac283dab364e27 [2021-05-02 16:14:06,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 16:14:06,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 16:14:06,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 16:14:06,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 16:14:06,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 16:14:06,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b38fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06, skipping insertion in model container [2021-05-02 16:14:06,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 16:14:06,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 16:14:06,789 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_valuebound10.c[573,586] [2021-05-02 16:14:06,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:14:06,810 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 16:14:06,820 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_valuebound10.c[573,586] [2021-05-02 16:14:06,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:14:06,839 INFO L208 MainTranslator]: Completed translation [2021-05-02 16:14:06,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06 WrapperNode [2021-05-02 16:14:06,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 16:14:06,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 16:14:06,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 16:14:06,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 16:14:06,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (1/1) ... [2021-05-02 16:14:06,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 16:14:06,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 16:14:06,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 16:14:06,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 16:14:06,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (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 16:14:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 16:14:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 16:14:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 16:14:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 16:14:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 16:14:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 16:14:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 16:14:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 16:14:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 16:14:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 16:14:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 16:14:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 16:14:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 16:14:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 16:14:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 16:14:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 16:14:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 16:14:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 16:14:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 16:14:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 16:14:07,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 16:14:07,189 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 16:14:07,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:14:07 BoogieIcfgContainer [2021-05-02 16:14:07,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 16:14:07,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 16:14:07,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 16:14:07,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 16:14:07,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 04:14:06" (1/3) ... [2021-05-02 16:14:07,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659a2c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:14:07, skipping insertion in model container [2021-05-02 16:14:07,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:14:06" (2/3) ... [2021-05-02 16:14:07,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659a2c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:14:07, skipping insertion in model container [2021-05-02 16:14:07,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:14:07" (3/3) ... [2021-05-02 16:14:07,194 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound10.c [2021-05-02 16:14:07,198 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 16:14:07,209 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 16:14:07,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 16:14:07,250 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 16:14:07,250 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 16:14:07,250 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 16:14:07,250 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 16:14:07,250 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 16:14:07,250 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 16:14:07,250 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 16:14:07,250 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 16:14:07,265 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) [2021-05-02 16:14:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 16:14:07,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:07,269 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:07,270 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:07,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:07,277 INFO L82 PathProgramCache]: Analyzing trace with hash -786972844, now seen corresponding path program 1 times [2021-05-02 16:14:07,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:07,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047749541] [2021-05-02 16:14:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 16:14:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 16:14:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 16:14:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:07,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:07,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047749541] [2021-05-02 16:14:07,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047749541] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:14:07,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:14:07,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 16:14:07,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199402260] [2021-05-02 16:14:07,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 16:14:07,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:07,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 16:14:07,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:14:07,495 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) [2021-05-02 16:14:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:07,545 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2021-05-02 16:14:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 16:14:07,547 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 [2021-05-02 16:14:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:07,551 INFO L225 Difference]: With dead ends: 51 [2021-05-02 16:14:07,552 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 16:14:07,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:14:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 16:14:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 16:14:07,576 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) [2021-05-02 16:14:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-05-02 16:14:07,578 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2021-05-02 16:14:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:07,578 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-05-02 16:14:07,578 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) [2021-05-02 16:14:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-05-02 16:14:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 16:14:07,580 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:07,580 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:07,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 16:14:07,580 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1131020600, now seen corresponding path program 1 times [2021-05-02 16:14:07,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:07,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882886116] [2021-05-02 16:14:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:07,594 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:07,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586584032] [2021-05-02 16:14:07,595 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 16:14:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:07,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 16:14:07,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:07,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 16:14:07,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:07,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882886116] [2021-05-02 16:14:07,766 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:07,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586584032] [2021-05-02 16:14:07,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586584032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:07,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:07,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 16:14:07,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463700856] [2021-05-02 16:14:07,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 16:14:07,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 16:14:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:14:07,768 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:14:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:07,830 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-05-02 16:14:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 16:14:07,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 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 [2021-05-02 16:14:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:07,831 INFO L225 Difference]: With dead ends: 35 [2021-05-02 16:14:07,831 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 16:14:07,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:14:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 16:14:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-05-02 16:14:07,837 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) [2021-05-02 16:14:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 16:14:07,838 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2021-05-02 16:14:07,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:07,839 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 16:14:07,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:14:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 16:14:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 16:14:07,839 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:07,840 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] [2021-05-02 16:14:08,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 16:14:08,057 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:08,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1991967029, now seen corresponding path program 1 times [2021-05-02 16:14:08,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:08,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191909104] [2021-05-02 16:14:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:08,072 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:08,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949105277] [2021-05-02 16:14:08,072 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 16:14:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:08,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 16:14:08,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:08,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 16:14:08,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:08,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191909104] [2021-05-02 16:14:08,276 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:08,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949105277] [2021-05-02 16:14:08,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949105277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:08,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:08,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 16:14:08,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665449318] [2021-05-02 16:14:08,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 16:14:08,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:08,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 16:14:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:14:08,277 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:14:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:08,378 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 16:14:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 16:14:08,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-05-02 16:14:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:08,379 INFO L225 Difference]: With dead ends: 30 [2021-05-02 16:14:08,379 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 16:14:08,379 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-02 16:14:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 16:14:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 16:14:08,380 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 16:14:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 16:14:08,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-05-02 16:14:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:08,380 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 16:14:08,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:14:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 16:14:08,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 16:14:08,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:08,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 16:14:08,763 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 16:14:08,764 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 16:14:08,764 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 16:14:08,764 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2021-05-02 16:14:08,764 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-05-02 16:14:08,765 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) (<= 0 main_~x1~0))) [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 22 51) no Hoare annotation was computed. [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 22 51) no Hoare annotation was computed. [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point L40(lines 40 47) no Hoare annotation was computed. [2021-05-02 16:14:08,765 INFO L194 CegarLoopUtils]: At program point L40-2(lines 35 48) the Hoare annotation is: (and (<= main_~y3~0 main_~x1~0) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0) (<= 0 main_~x1~0)) [2021-05-02 16:14:08,765 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= main_~y3~0 main_~x1~0) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0) (<= 0 main_~x1~0)) [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 48) no Hoare annotation was computed. [2021-05-02 16:14:08,765 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 22 51) the Hoare annotation is: true [2021-05-02 16:14:08,765 INFO L201 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-05-02 16:14:08,765 INFO L194 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (<= 0 main_~x1~0) [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point L49(line 49) no Hoare annotation was computed. [2021-05-02 16:14:08,765 INFO L198 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-05-02 16:14:08,766 INFO L198 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-05-02 16:14:08,766 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-05-02 16:14:08,766 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-05-02 16:14:08,766 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-05-02 16:14:08,766 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-05-02 16:14:08,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 04:14:08 BoogieIcfgContainer [2021-05-02 16:14:08,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 16:14:08,775 INFO L168 Benchmark]: Toolchain (without parser) took 2093.08 ms. Allocated memory is still 198.2 MB. Free memory was 162.5 MB in the beginning and 131.6 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2021-05-02 16:14:08,775 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 198.2 MB. Free memory is still 178.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 16:14:08,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.36 ms. Allocated memory is still 198.2 MB. Free memory was 162.3 MB in the beginning and 152.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 16:14:08,775 INFO L168 Benchmark]: Boogie Preprocessor took 59.50 ms. Allocated memory is still 198.2 MB. Free memory was 152.7 MB in the beginning and 182.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2021-05-02 16:14:08,775 INFO L168 Benchmark]: RCFGBuilder took 288.70 ms. Allocated memory is still 198.2 MB. Free memory was 182.4 MB in the beginning and 167.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 16:14:08,775 INFO L168 Benchmark]: TraceAbstraction took 1583.90 ms. Allocated memory is still 198.2 MB. Free memory was 167.6 MB in the beginning and 131.6 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. [2021-05-02 16:14:08,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 198.2 MB. Free memory is still 178.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 157.36 ms. Allocated memory is still 198.2 MB. Free memory was 162.3 MB in the beginning and 152.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.50 ms. Allocated memory is still 198.2 MB. Free memory was 152.7 MB in the beginning and 182.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 288.70 ms. Allocated memory is still 198.2 MB. Free memory was 182.4 MB in the beginning and 167.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1583.90 ms. Allocated memory is still 198.2 MB. Free memory was 167.6 MB in the beginning and 131.6 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 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: 1347.8ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 8.1ms, AutomataDifference: 234.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 167.1ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 53 SDslu, 167 SDs, 0 SdLazy, 169 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 194.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 17 PreInvPairs, 23 NumberOfFragments, 89 HoareAnnotationTreeSize, 17 FomulaSimplifications, 158 FormulaSimplificationTreeSizeReduction, 67.6ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 249 FormulaSimplificationTreeSizeReductionInter, 93.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.6ms SsaConstructionTime, 62.5ms SatisfiabilityAnalysisTime, 396.9ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 199 SizeOfPredicates, 6 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 7/14 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: (y3 <= x1 && y2 + y3 + y1 * x2 == x1) && 0 <= x1 RESULT: Ultimate proved your program to be correct! Received shutdown request...