/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/fermat2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:16:14,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:16:14,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:16:14,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:16:14,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:16:14,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:16:14,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:16:14,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:16:14,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:16:14,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:16:14,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:16:14,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:16:14,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:16:14,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:16:14,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:16:14,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:16:14,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:16:14,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:16:14,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:16:14,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:16:14,921 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 15:16:14,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:16:14,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:16:14,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:16:14,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:16:14,952 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:16:14,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:16:14,952 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:16:14,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:16:14,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:16:14,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:16:14,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:16:14,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:16:14,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:16:14,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:16:14,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:16:14,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:16:14,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:16:14,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:16:14,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:16:14,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:16:14,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:16:14,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:16:14,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:16:14,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:16:14,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:16:14,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:16:14,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:16:14,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:16:14,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:16:15,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:16:15,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:16:15,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:16:15,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:16:15,282 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:16:15,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound100.c [2021-05-02 15:16:15,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede274732/8f83258722664e5c8d2077ecf61c67e6/FLAGeac205de5 [2021-05-02 15:16:15,777 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:16:15,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound100.c [2021-05-02 15:16:15,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede274732/8f83258722664e5c8d2077ecf61c67e6/FLAGeac205de5 [2021-05-02 15:16:15,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede274732/8f83258722664e5c8d2077ecf61c67e6 [2021-05-02 15:16:15,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:16:15,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:16:15,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:16:15,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:16:15,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:16:15,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:15,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7041eee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15, skipping insertion in model container [2021-05-02 15:16:15,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:15,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:16:15,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:16:15,918 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/fermat2-ll_valuebound100.c[524,537] [2021-05-02 15:16:15,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:16:15,937 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:16:15,964 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/fermat2-ll_valuebound100.c[524,537] [2021-05-02 15:16:15,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:16:15,989 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:16:15,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15 WrapperNode [2021-05-02 15:16:15,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:16:15,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:16:15,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:16:15,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:16:15,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:15,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:16,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:16,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:16,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:16,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:16,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (1/1) ... [2021-05-02 15:16:16,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:16:16,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:16:16,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:16:16,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:16:16,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (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 15:16:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:16:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:16:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:16:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:16:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:16:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:16:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:16:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:16:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:16:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:16:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:16:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:16:16,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:16:16,341 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:16:16,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:16:16 BoogieIcfgContainer [2021-05-02 15:16:16,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:16:16,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:16:16,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:16:16,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:16:16,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:16:15" (1/3) ... [2021-05-02 15:16:16,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68429859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:16:16, skipping insertion in model container [2021-05-02 15:16:16,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:15" (2/3) ... [2021-05-02 15:16:16,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68429859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:16:16, skipping insertion in model container [2021-05-02 15:16:16,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:16:16" (3/3) ... [2021-05-02 15:16:16,350 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound100.c [2021-05-02 15:16:16,355 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:16:16,358 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:16:16,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:16:16,419 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:16:16,420 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:16:16,420 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:16:16,420 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:16:16,420 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:16:16,420 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:16:16,420 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:16:16,420 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:16:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 15:16:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:16:16,465 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:16,466 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:16,466 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 1 times [2021-05-02 15:16:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:16,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143570022] [2021-05-02 15:16:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:16:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:16:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:16:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:16,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 15:16:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:16,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 15:16:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 15:16:16,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:16,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143570022] [2021-05-02 15:16:16,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143570022] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:16:16,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:16:16,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:16:16,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115555109] [2021-05-02 15:16:16,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:16:16,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:16,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:16:16,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:16:16,821 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:16:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:16,941 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2021-05-02 15:16:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:16:16,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:16:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:16,950 INFO L225 Difference]: With dead ends: 57 [2021-05-02 15:16:16,951 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 15:16:16,955 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:16:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 15:16:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 15:16:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 15:16:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-05-02 15:16:17,001 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2021-05-02 15:16:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:17,002 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-05-02 15:16:17,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:16:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-05-02 15:16:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:16:17,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:17,004 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:17,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:16:17,005 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 1 times [2021-05-02 15:16:17,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:17,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827772263] [2021-05-02 15:16:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:17,042 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:17,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776756756] [2021-05-02 15:16:17,042 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 15:16:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:17,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:16:17,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:16:17,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:17,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827772263] [2021-05-02 15:16:17,438 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:16:17,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776756756] [2021-05-02 15:16:17,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776756756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:16:17,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:16:17,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:16:17,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495097370] [2021-05-02 15:16:17,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:16:17,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:16:17,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:16:17,444 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:16:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:17,613 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-05-02 15:16:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:16:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:16:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:17,616 INFO L225 Difference]: With dead ends: 38 [2021-05-02 15:16:17,616 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 15:16:17,616 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:16:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 15:16:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-05-02 15:16:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 15:16:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-05-02 15:16:17,640 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 33 [2021-05-02 15:16:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:17,643 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-05-02 15:16:17,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:16:17,643 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-05-02 15:16:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 15:16:17,644 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:17,645 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:17,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:16:17,867 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:17,868 INFO L82 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 1 times [2021-05-02 15:16:17,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:17,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959304984] [2021-05-02 15:16:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:17,881 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:17,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942821389] [2021-05-02 15:16:17,881 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 15:16:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:17,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 15:16:17,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:17,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,224 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-05-02 15:16:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:16:18,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:18,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959304984] [2021-05-02 15:16:18,260 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:16:18,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942821389] [2021-05-02 15:16:18,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942821389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:16:18,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:16:18,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 15:16:18,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130536190] [2021-05-02 15:16:18,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 15:16:18,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:18,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 15:16:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:16:18,262 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:16:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:24,512 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-05-02 15:16:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 15:16:24,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-05-02 15:16:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:24,514 INFO L225 Difference]: With dead ends: 41 [2021-05-02 15:16:24,514 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 15:16:24,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 228.1ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:16:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 15:16:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 15:16:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 15:16:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-05-02 15:16:24,521 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 39 [2021-05-02 15:16:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:24,521 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-05-02 15:16:24,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:16:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-05-02 15:16:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 15:16:24,522 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:24,523 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:24,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:16:24,737 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:24,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1657118275, now seen corresponding path program 1 times [2021-05-02 15:16:24,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:24,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169166674] [2021-05-02 15:16:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:24,749 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:24,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417586778] [2021-05-02 15:16:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:16:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:24,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 15:16:24,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:24,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:24,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:25,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:25,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:16:25,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:25,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169166674] [2021-05-02 15:16:25,155 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:16:25,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417586778] [2021-05-02 15:16:25,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417586778] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:16:25,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:16:25,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 15:16:25,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808033803] [2021-05-02 15:16:25,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 15:16:25,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:25,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 15:16:25,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:16:25,157 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 15:16:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:27,926 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-05-02 15:16:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:16:27,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2021-05-02 15:16:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:27,929 INFO L225 Difference]: With dead ends: 50 [2021-05-02 15:16:27,929 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 15:16:27,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 205.3ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:16:27,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 15:16:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-05-02 15:16:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 15:16:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-05-02 15:16:27,938 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 41 [2021-05-02 15:16:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:27,939 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-05-02 15:16:27,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 15:16:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-05-02 15:16:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 15:16:27,940 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:27,941 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:28,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:16:28,149 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:28,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1974186685, now seen corresponding path program 2 times [2021-05-02 15:16:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:28,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276307506] [2021-05-02 15:16:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:28,161 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:28,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001720569] [2021-05-02 15:16:28,161 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 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 15:16:28,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:16:28,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:16:28,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 15:16:28,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:28,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 15:16:28,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:28,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276307506] [2021-05-02 15:16:28,551 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:16:28,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001720569] [2021-05-02 15:16:28,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001720569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:16:28,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:16:28,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 15:16:28,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420139560] [2021-05-02 15:16:28,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 15:16:28,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:28,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 15:16:28,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 15:16:28,553 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 15:16:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:31,628 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-05-02 15:16:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 15:16:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 49 [2021-05-02 15:16:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:31,630 INFO L225 Difference]: With dead ends: 58 [2021-05-02 15:16:31,630 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 15:16:31,631 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 15:16:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 15:16:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-05-02 15:16:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 15:16:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-05-02 15:16:31,639 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 49 [2021-05-02 15:16:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:31,640 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-05-02 15:16:31,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 15:16:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-05-02 15:16:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 15:16:31,641 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:31,641 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:31,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:16:31,842 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:31,843 INFO L82 PathProgramCache]: Analyzing trace with hash -197393475, now seen corresponding path program 3 times [2021-05-02 15:16:31,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:31,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49307843] [2021-05-02 15:16:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:31,849 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:31,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797510067] [2021-05-02 15:16:31,849 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:16:31,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 15:16:31,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:16:31,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 15:16:31,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:32,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:32,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-05-02 15:16:32,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:32,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49307843] [2021-05-02 15:16:32,080 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:16:32,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797510067] [2021-05-02 15:16:32,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797510067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:16:32,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:16:32,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 15:16:32,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139728509] [2021-05-02 15:16:32,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 15:16:32,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 15:16:32,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 15:16:32,083 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-05-02 15:16:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:37,754 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-05-02 15:16:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 15:16:37,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2021-05-02 15:16:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:37,756 INFO L225 Difference]: With dead ends: 70 [2021-05-02 15:16:37,756 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 15:16:37,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:16:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 15:16:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2021-05-02 15:16:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 15:16:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-05-02 15:16:37,766 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 57 [2021-05-02 15:16:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:37,766 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-05-02 15:16:37,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-05-02 15:16:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-05-02 15:16:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 15:16:37,768 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:37,768 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:16:37,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 15:16:37,981 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:37,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:37,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1923807749, now seen corresponding path program 1 times [2021-05-02 15:16:37,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:37,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057287886] [2021-05-02 15:16:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:37,992 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:37,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54709057] [2021-05-02 15:16:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:16:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:38,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 15:16:38,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:38,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:38,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:48,401 WARN L205 SmtUtils]: Spent 8.13 s on a formula simplification that was a NOOP. DAG size: 31 [2021-05-02 15:16:54,533 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 15:16:54,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:54,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,941 WARN L205 SmtUtils]: Spent 7.59 s on a formula simplification that was a NOOP. DAG size: 23 [2021-05-02 15:17:08,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:08,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:15,166 WARN L205 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 15:17:38,886 WARN L205 SmtUtils]: Spent 13.50 s on a formula simplification that was a NOOP. DAG size: 35 [2021-05-02 15:17:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:17:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 41 refuted. 4 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 15:17:38,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:17:38,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057287886] [2021-05-02 15:17:38,944 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:17:38,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54709057] [2021-05-02 15:17:38,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54709057] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:17:38,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:17:38,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 15:17:38,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463571646] [2021-05-02 15:17:38,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 15:17:38,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:17:38,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 15:17:38,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=162, Unknown=9, NotChecked=0, Total=210 [2021-05-02 15:17:38,946 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 15:18:17,414 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 34 [2021-05-02 15:18:27,918 WARN L205 SmtUtils]: Spent 10.08 s on a formula simplification that was a NOOP. DAG size: 42 [2021-05-02 15:18:47,803 WARN L205 SmtUtils]: Spent 8.78 s on a formula simplification that was a NOOP. DAG size: 45 [2021-05-02 15:19:42,166 WARN L205 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 43 [2021-05-02 15:19:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:19:44,194 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2021-05-02 15:19:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 15:19:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 65 [2021-05-02 15:19:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:19:44,207 INFO L225 Difference]: With dead ends: 98 [2021-05-02 15:19:44,207 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 15:19:44,208 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 99842.8ms TimeCoverageRelationStatistics Valid=84, Invalid=364, Unknown=14, NotChecked=0, Total=462 [2021-05-02 15:19:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 15:19:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2021-05-02 15:19:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 54 states have internal predecessors, (58), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 15:19:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2021-05-02 15:19:44,224 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 65 [2021-05-02 15:19:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:19:44,224 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2021-05-02 15:19:44,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 15:19:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2021-05-02 15:19:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 15:19:44,225 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:19:44,225 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:19:44,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:19:44,426 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:19:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:19:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1860102713, now seen corresponding path program 2 times [2021-05-02 15:19:44,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:19:44,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454935421] [2021-05-02 15:19:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:19:44,436 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:19:44,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354805846] [2021-05-02 15:19:44,436 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:19:44,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:19:44,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:19:44,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 15:19:44,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:19:44,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-05-02 15:19:44,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:19:44,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454935421] [2021-05-02 15:19:44,898 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:19:44,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354805846] [2021-05-02 15:19:44,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354805846] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:19:44,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:19:44,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:19:44,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448700388] [2021-05-02 15:19:44,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:19:44,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:19:44,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:19:44,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:19:44,919 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-05-02 15:19:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:19:45,386 INFO L93 Difference]: Finished difference Result 152 states and 182 transitions. [2021-05-02 15:19:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 15:19:45,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 73 [2021-05-02 15:19:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:19:45,393 INFO L225 Difference]: With dead ends: 152 [2021-05-02 15:19:45,394 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 15:19:45,394 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 347.1ms TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-05-02 15:19:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 15:19:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 15:19:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 72 states have internal predecessors, (80), 21 states have call successors, (21), 10 states have call predecessors, (21), 9 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 15:19:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2021-05-02 15:19:45,439 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 73 [2021-05-02 15:19:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:19:45,439 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2021-05-02 15:19:45,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-05-02 15:19:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2021-05-02 15:19:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 15:19:45,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:19:45,445 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:19:45,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:19:45,669 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:19:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:19:45,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1204892615, now seen corresponding path program 3 times [2021-05-02 15:19:45,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:19:45,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638048057] [2021-05-02 15:19:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:19:45,678 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:19:45,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339588241] [2021-05-02 15:19:45,678 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:19:45,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 15:19:45,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:19:45,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 15:19:45,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:19:45,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:45,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:46,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:19:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-05-02 15:19:46,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:19:46,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638048057] [2021-05-02 15:19:46,044 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:19:46,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339588241] [2021-05-02 15:19:46,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339588241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:19:46,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:19:46,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:19:46,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477781288] [2021-05-02 15:19:46,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:19:46,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:19:46,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:19:46,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:19:46,046 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 15:19:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:19:50,606 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2021-05-02 15:19:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 15:19:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2021-05-02 15:19:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:19:50,608 INFO L225 Difference]: With dead ends: 114 [2021-05-02 15:19:50,608 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:19:50,609 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 15:19:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:19:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:19:50,609 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 15:19:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:19:50,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2021-05-02 15:19:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:19:50,609 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:19:50,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 15:19:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:19:50,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:19:50,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 15:19:50,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:19:50,980 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 97 [2021-05-02 15:19:53,237 WARN L205 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 42 DAG size of output: 22 [2021-05-02 15:20:29,793 WARN L205 SmtUtils]: Spent 36.50 s on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2021-05-02 15:20:51,665 WARN L205 SmtUtils]: Spent 21.87 s on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2021-05-02 15:20:51,696 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 15:20:51,696 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 15:20:51,696 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 15:20:51,696 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:20:51,696 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 15:20:51,697 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:20:51,697 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:20:51,697 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:20:51,697 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:20:51,697 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:20:51,697 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-02 15:20:51,697 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-02 15:20:51,697 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-02 15:20:51,697 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-02 15:20:51,697 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~A~0 4)) (.cse3 (* main_~u~0 2)) (.cse0 (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)))) (and (<= main_~A~0 100) (= .cse0 (+ .cse1 .cse2 (* main_~r~0 4) .cse3)) (= (+ .cse1 .cse2 .cse3) .cse0) (<= 0 main_~A~0))) [2021-05-02 15:20:51,697 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-02 15:20:51,698 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~A~0 100) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0)))) [2021-05-02 15:20:51,698 INFO L194 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~A~0 100) (<= 0 main_~A~0)) [2021-05-02 15:20:51,698 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 51) no Hoare annotation was computed. [2021-05-02 15:20:51,698 INFO L194 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (<= main_~A~0 100) (<= 0 main_~A~0)) [2021-05-02 15:20:51,698 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-02 15:20:51,698 INFO L198 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-05-02 15:20:51,698 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 51) no Hoare annotation was computed. [2021-05-02 15:20:51,698 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= main_~A~0 100) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) (<= 0 main_~A~0) (= (mod main_~A~0 2) 1)) [2021-05-02 15:20:51,698 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2021-05-02 15:20:51,698 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 51) the Hoare annotation is: true [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point L49(line 49) no Hoare annotation was computed. [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point L39(lines 39 45) no Hoare annotation was computed. [2021-05-02 15:20:51,699 INFO L194 CegarLoopUtils]: At program point L39-2(lines 35 46) the Hoare annotation is: (and (<= main_~A~0 100) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) (<= 0 main_~A~0) (= (mod main_~A~0 2) 1)) [2021-05-02 15:20:51,699 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-02 15:20:51,699 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-02 15:20:51,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:20:51 BoogieIcfgContainer [2021-05-02 15:20:51,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:20:51,712 INFO L168 Benchmark]: Toolchain (without parser) took 275909.63 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 170.5 MB in the beginning and 133.2 MB in the end (delta: 37.3 MB). Peak memory consumption was 126.3 MB. Max. memory is 8.0 GB. [2021-05-02 15:20:51,712 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 206.6 MB. Free memory is still 187.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:20:51,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.53 ms. Allocated memory is still 206.6 MB. Free memory was 170.3 MB in the beginning and 189.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-05-02 15:20:51,712 INFO L168 Benchmark]: Boogie Preprocessor took 22.22 ms. Allocated memory is still 206.6 MB. Free memory was 189.3 MB in the beginning and 187.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:20:51,713 INFO L168 Benchmark]: RCFGBuilder took 329.84 ms. Allocated memory is still 206.6 MB. Free memory was 187.7 MB in the beginning and 172.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:20:51,713 INFO L168 Benchmark]: TraceAbstraction took 275367.25 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 172.0 MB in the beginning and 133.2 MB in the end (delta: 38.8 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. [2021-05-02 15:20:51,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 206.6 MB. Free memory is still 187.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 185.53 ms. Allocated memory is still 206.6 MB. Free memory was 170.3 MB in the beginning and 189.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.22 ms. Allocated memory is still 206.6 MB. Free memory was 189.3 MB in the beginning and 187.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 329.84 ms. Allocated memory is still 206.6 MB. Free memory was 187.7 MB in the beginning and 172.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 275367.25 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 172.0 MB in the beginning and 133.2 MB in the end (delta: 38.8 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 214415.6ms, OverallIterations: 9, TraceHistogramMax: 6, EmptinessCheckTime: 30.7ms, AutomataDifference: 148404.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 60862.7ms, InitialAbstractionConstructionTime: 27.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 224 SDtfs, 158 SDslu, 1144 SDs, 0 SdLazy, 1252 SolverSat, 86 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 107637.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 468 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 101092.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=8, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 150.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 45 PreInvPairs, 81 NumberOfFragments, 200 HoareAnnotationTreeSize, 45 FomulaSimplifications, 10846 FormulaSimplificationTreeSizeReduction, 223.1ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 1045 FormulaSimplificationTreeSizeReductionInter, 60631.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 102.8ms SsaConstructionTime, 400.3ms SatisfiabilityAnalysisTime, 63114.9ms InterpolantComputationTime, 463 NumberOfCodeBlocks, 393 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 2713 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1255 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 396/538 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: (((A <= 100 && R * R + 1 < A + 2 * R) && u * u + v * 2 == v * v + A * 4 + r * 4 + u * 2) && 0 <= A) && A % 2 == 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...