/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/prod4br-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 04:14:32,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 04:14:32,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 04:14:32,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 04:14:32,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 04:14:32,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 04:14:32,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 04:14:32,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 04:14:32,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 04:14:32,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 04:14:32,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 04:14:32,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 04:14:32,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 04:14:32,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 04:14:32,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 04:14:32,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 04:14:32,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 04:14:32,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 04:14:32,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 04:14:32,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 04:14:32,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 04:14:32,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 04:14:32,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 04:14:32,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 04:14:32,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 04:14:32,918 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 04:14:32,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 04:14:32,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 04:14:32,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 04:14:32,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 04:14:32,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 04:14:32,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 04:14:32,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 04:14:32,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 04:14:32,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 04:14:32,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 04:14:32,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 04:14:33,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 04:14:33,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 04:14:33,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 04:14:33,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 04:14:33,261 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 04:14:33,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-05-06 04:14:33,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a7eb59f/9ffd8ce774474162ab041fe34a04f899/FLAG5941107ce [2021-05-06 04:14:33,664 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 04:14:33,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-05-06 04:14:33,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a7eb59f/9ffd8ce774474162ab041fe34a04f899/FLAG5941107ce [2021-05-06 04:14:34,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a7eb59f/9ffd8ce774474162ab041fe34a04f899 [2021-05-06 04:14:34,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 04:14:34,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 04:14:34,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 04:14:34,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 04:14:34,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 04:14:34,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238645d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34, skipping insertion in model container [2021-05-06 04:14:34,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 04:14:34,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 04:14:34,217 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/prod4br-ll_valuebound1.c[524,537] [2021-05-06 04:14:34,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 04:14:34,241 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 04:14:34,263 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/prod4br-ll_valuebound1.c[524,537] [2021-05-06 04:14:34,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 04:14:34,295 INFO L208 MainTranslator]: Completed translation [2021-05-06 04:14:34,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34 WrapperNode [2021-05-06 04:14:34,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 04:14:34,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 04:14:34,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 04:14:34,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 04:14:34,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... [2021-05-06 04:14:34,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 04:14:34,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 04:14:34,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 04:14:34,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 04:14:34,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 04:14:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 04:14:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 04:14:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 04:14:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 04:14:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 04:14:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 04:14:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 04:14:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 04:14:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 04:14:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 04:14:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 04:14:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 04:14:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 04:14:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 04:14:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 04:14:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 04:14:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 04:14:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 04:14:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 04:14:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 04:14:34,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 04:14:34,715 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 04:14:34,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 04:14:34 BoogieIcfgContainer [2021-05-06 04:14:34,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 04:14:34,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 04:14:34,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 04:14:34,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 04:14:34,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 04:14:34" (1/3) ... [2021-05-06 04:14:34,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a53ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 04:14:34, skipping insertion in model container [2021-05-06 04:14:34,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:14:34" (2/3) ... [2021-05-06 04:14:34,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a53ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 04:14:34, skipping insertion in model container [2021-05-06 04:14:34,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 04:14:34" (3/3) ... [2021-05-06 04:14:34,722 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2021-05-06 04:14:34,726 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 04:14:34,728 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 04:14:34,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 04:14:34,765 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 04:14:34,766 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 04:14:34,766 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 04:14:34,766 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 04:14:34,766 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 04:14:34,766 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 04:14:34,766 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 04:14:34,766 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 04:14:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 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) [2021-05-06 04:14:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 04:14:34,799 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:34,805 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:34,805 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1738134960, now seen corresponding path program 1 times [2021-05-06 04:14:34,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:34,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21848892] [2021-05-06 04:14:34,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 04:14:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 04:14:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 04:14:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:35,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 04:14:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 04:14:35,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:35,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21848892] [2021-05-06 04:14:35,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21848892] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:14:35,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:14:35,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 04:14:35,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92046872] [2021-05-06 04:14:35,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 04:14:35,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:35,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 04:14:35,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 04:14:35,102 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 04:14:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:35,213 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2021-05-06 04:14:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 04:14:35,215 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-06 04:14:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:35,221 INFO L225 Difference]: With dead ends: 61 [2021-05-06 04:14:35,221 INFO L226 Difference]: Without dead ends: 29 [2021-05-06 04:14:35,224 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 04:14:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-06 04:14:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-06 04:14:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-05-06 04:14:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-05-06 04:14:35,268 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 28 [2021-05-06 04:14:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:35,269 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-05-06 04:14:35,269 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 04:14:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-05-06 04:14:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 04:14:35,272 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:35,272 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:35,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 04:14:35,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash 567203544, now seen corresponding path program 1 times [2021-05-06 04:14:35,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:35,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958578529] [2021-05-06 04:14:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:35,317 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:35,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162032890] [2021-05-06 04:14:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:35,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 04:14:35,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:35,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 04:14:35,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:35,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958578529] [2021-05-06 04:14:35,719 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:35,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162032890] [2021-05-06 04:14:35,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162032890] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:14:35,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:14:35,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-06 04:14:35,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746874364] [2021-05-06 04:14:35,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 04:14:35,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 04:14:35,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-06 04:14:35,721 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 04:14:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:35,869 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-05-06 04:14:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 04:14:35,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-05-06 04:14:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:35,874 INFO L225 Difference]: With dead ends: 55 [2021-05-06 04:14:35,874 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 04:14:35,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-06 04:14:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 04:14:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-05-06 04:14:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-05-06 04:14:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-05-06 04:14:35,891 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2021-05-06 04:14:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:35,891 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-05-06 04:14:35,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 04:14:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-05-06 04:14:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-06 04:14:35,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:35,894 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:36,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 04:14:36,109 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1139707498, now seen corresponding path program 1 times [2021-05-06 04:14:36,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:36,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476560888] [2021-05-06 04:14:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:36,122 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:36,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529324810] [2021-05-06 04:14:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:36,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 04:14:36,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:36,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 04:14:36,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:36,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476560888] [2021-05-06 04:14:36,532 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:36,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529324810] [2021-05-06 04:14:36,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529324810] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:14:36,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:14:36,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-06 04:14:36,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248517994] [2021-05-06 04:14:36,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 04:14:36,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:36,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 04:14:36,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-05-06 04:14:36,534 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 04:14:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:41,209 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2021-05-06 04:14:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 04:14:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2021-05-06 04:14:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:41,210 INFO L225 Difference]: With dead ends: 47 [2021-05-06 04:14:41,210 INFO L226 Difference]: Without dead ends: 39 [2021-05-06 04:14:41,211 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 326.4ms TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-05-06 04:14:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-06 04:14:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-05-06 04:14:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-05-06 04:14:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-05-06 04:14:41,226 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 34 [2021-05-06 04:14:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:41,227 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-05-06 04:14:41,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 04:14:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-05-06 04:14:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 04:14:41,228 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:41,228 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:41,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:41,451 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:41,452 INFO L82 PathProgramCache]: Analyzing trace with hash 844519116, now seen corresponding path program 1 times [2021-05-06 04:14:41,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:41,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712045961] [2021-05-06 04:14:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:41,466 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:41,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598686218] [2021-05-06 04:14:41,466 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 [2021-05-06 04:14:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:41,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 04:14:41,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:41,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-06 04:14:41,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:41,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712045961] [2021-05-06 04:14:41,626 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:41,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598686218] [2021-05-06 04:14:41,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598686218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:14:41,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:14:41,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 04:14:41,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058901889] [2021-05-06 04:14:41,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 04:14:41,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:41,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 04:14:41,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 04:14:41,628 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-06 04:14:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:41,710 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-05-06 04:14:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 04:14:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-05-06 04:14:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:41,713 INFO L225 Difference]: With dead ends: 52 [2021-05-06 04:14:41,713 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 04:14:41,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-06 04:14:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 04:14:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 04:14:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-05-06 04:14:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-05-06 04:14:41,731 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 38 [2021-05-06 04:14:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:41,732 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-05-06 04:14:41,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-06 04:14:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-05-06 04:14:41,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 04:14:41,735 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:41,735 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:41,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:41,949 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:41,949 INFO L82 PathProgramCache]: Analyzing trace with hash 901777418, now seen corresponding path program 1 times [2021-05-06 04:14:41,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:41,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631374687] [2021-05-06 04:14:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:41,959 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:41,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135650210] [2021-05-06 04:14:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 04:14:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:42,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-06 04:14:42,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:42,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 04:14:42,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:42,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631374687] [2021-05-06 04:14:42,389 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:42,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135650210] [2021-05-06 04:14:42,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135650210] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:14:42,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:14:42,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-06 04:14:42,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876006792] [2021-05-06 04:14:42,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 04:14:42,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:42,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 04:14:42,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-05-06 04:14:42,391 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 04:14:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:42,556 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-05-06 04:14:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 04:14:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2021-05-06 04:14:42,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:42,557 INFO L225 Difference]: With dead ends: 48 [2021-05-06 04:14:42,557 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 04:14:42,558 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 244.8ms TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-05-06 04:14:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 04:14:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 04:14:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 04:14:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 04:14:42,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-05-06 04:14:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:42,559 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 04:14:42,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 04:14:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 04:14:42,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 04:14:42,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:42,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 04:14:43,058 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2021-05-06 04:14:43,220 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2021-05-06 04:14:43,379 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2021-05-06 04:14:43,531 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2021-05-06 04:14:43,533 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-06 04:14:43,533 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-06 04:14:43,533 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-06 04:14:43,533 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 04:14:43,533 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-06 04:14:43,533 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 04:14:43,533 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 04:14:43,533 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 04:14:43,533 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point L27(line 27) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point L58(line 58) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 60) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 60) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L198 CegarLoopUtils]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-05-06 04:14:43,534 INFO L194 CegarLoopUtils]: At program point L34-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (* main_~x~0 main_~y~0)) (.cse1 (<= 0 main_~x~0)) (.cse3 (<= 1 main_~y~0)) (.cse4 (<= main_~y~0 1))) (or (let ((.cse2 (+ main_~a~0 1))) (and (= (+ .cse0 (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) (+ (* main_~y~0 main_~p~0) (* main_~y~0 main_~p~0 main_~a~0) main_~q~0)) (= main_~y~0 (+ main_~b~0 1)) .cse1 (not (= .cse2 0)) (= main_~x~0 .cse2) .cse3 (<= main_~x~0 1) (= main_~p~0 1) .cse4)) (and (<= 1 main_~p~0) (<= main_~y~0 main_~b~0) (<= main_~q~0 0) (= main_~q~0 .cse0) .cse1 .cse3 (= main_~a~0 0) .cse4))) [2021-05-06 04:14:43,535 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 60) the Hoare annotation is: true [2021-05-06 04:14:43,535 INFO L194 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 1)) [2021-05-06 04:14:43,535 INFO L194 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 main_~x~0) (<= 0 main_~y~0) (<= main_~x~0 1) (<= main_~y~0 1)) [2021-05-06 04:14:43,535 INFO L194 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (* main_~x~0 main_~y~0)) (.cse1 (<= 0 main_~x~0)) (.cse3 (<= 1 main_~y~0)) (.cse4 (<= main_~y~0 1))) (or (let ((.cse2 (+ main_~a~0 1))) (and (= (+ .cse0 (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) (+ (* main_~y~0 main_~p~0) (* main_~y~0 main_~p~0 main_~a~0) main_~q~0)) (= main_~y~0 (+ main_~b~0 1)) .cse1 (not (= .cse2 0)) (= main_~x~0 .cse2) .cse3 (<= main_~x~0 1) (= main_~p~0 1) .cse4)) (and (<= 1 main_~p~0) (<= main_~y~0 main_~b~0) (<= main_~q~0 0) (= main_~q~0 .cse0) .cse1 .cse3 (= main_~a~0 0) .cse4))) [2021-05-06 04:14:43,535 INFO L201 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-05-06 04:14:43,535 INFO L198 CegarLoopUtils]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-05-06 04:14:43,535 INFO L198 CegarLoopUtils]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-05-06 04:14:43,535 INFO L194 CegarLoopUtils]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse1 (<= 0 main_~x~0)) (.cse3 (<= 1 main_~y~0)) (.cse4 (<= main_~x~0 1)) (.cse5 (= main_~p~0 1)) (.cse0 (* main_~x~0 main_~y~0)) (.cse6 (<= main_~y~0 1))) (or (let ((.cse2 (+ main_~a~0 1))) (and (= (+ .cse0 (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) (+ (* main_~y~0 main_~p~0) (* main_~y~0 main_~p~0 main_~a~0) main_~q~0)) (= main_~y~0 (+ main_~b~0 1)) .cse1 (not (= .cse2 0)) (= main_~x~0 .cse2) .cse3 .cse4 .cse5 .cse6)) (and (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0) .cse1 .cse3 .cse4 .cse5 (= .cse0 (+ main_~q~0 (* main_~p~0 main_~a~0 main_~b~0))) .cse6))) [2021-05-06 04:14:43,535 INFO L194 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (<= 0 main_~x~0)) (.cse3 (<= 1 main_~y~0)) (.cse4 (<= main_~x~0 1)) (.cse5 (= main_~p~0 1)) (.cse0 (* main_~x~0 main_~y~0)) (.cse6 (<= main_~y~0 1))) (or (let ((.cse2 (+ main_~a~0 1))) (and (= (+ .cse0 (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) (+ (* main_~y~0 main_~p~0) (* main_~y~0 main_~p~0 main_~a~0) main_~q~0)) (= main_~y~0 (+ main_~b~0 1)) .cse1 (not (= .cse2 0)) (= main_~x~0 .cse2) .cse3 .cse4 .cse5 .cse6)) (and (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0) .cse1 .cse3 .cse4 .cse5 (= .cse0 (+ main_~q~0 (* main_~p~0 main_~a~0 main_~b~0))) .cse6))) [2021-05-06 04:14:43,536 INFO L198 CegarLoopUtils]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2021-05-06 04:14:43,536 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-06 04:14:43,537 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-06 04:14:43,537 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-06 04:14:43,537 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-06 04:14:43,537 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-06 04:14:43,537 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-06 04:14:43,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 04:14:43 BoogieIcfgContainer [2021-05-06 04:14:43,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 04:14:43,552 INFO L168 Benchmark]: Toolchain (without parser) took 9468.15 ms. Allocated memory was 195.0 MB in the beginning and 234.9 MB in the end (delta: 39.8 MB). Free memory was 160.4 MB in the beginning and 184.1 MB in the end (delta: -23.7 MB). Peak memory consumption was 120.0 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:43,553 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 195.0 MB. Free memory is still 177.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 04:14:43,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.17 ms. Allocated memory is still 195.0 MB. Free memory was 160.2 MB in the beginning and 177.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:43,553 INFO L168 Benchmark]: Boogie Preprocessor took 24.27 ms. Allocated memory is still 195.0 MB. Free memory was 177.3 MB in the beginning and 175.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:43,553 INFO L168 Benchmark]: RCFGBuilder took 394.43 ms. Allocated memory is still 195.0 MB. Free memory was 175.9 MB in the beginning and 159.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:43,553 INFO L168 Benchmark]: TraceAbstraction took 8835.29 ms. Allocated memory was 195.0 MB in the beginning and 234.9 MB in the end (delta: 39.8 MB). Free memory was 159.1 MB in the beginning and 184.1 MB in the end (delta: -24.9 MB). Peak memory consumption was 118.6 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:43,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 195.0 MB. Free memory is still 177.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 208.17 ms. Allocated memory is still 195.0 MB. Free memory was 160.2 MB in the beginning and 177.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.27 ms. Allocated memory is still 195.0 MB. Free memory was 177.3 MB in the beginning and 175.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 394.43 ms. Allocated memory is still 195.0 MB. Free memory was 175.9 MB in the beginning and 159.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8835.29 ms. Allocated memory was 195.0 MB in the beginning and 234.9 MB in the end (delta: 39.8 MB). Free memory was 159.1 MB in the beginning and 184.1 MB in the end (delta: -24.9 MB). Peak memory consumption was 118.6 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, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8020.1ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 15.8ms, AutomataDifference: 5220.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 748.6ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 143 SDslu, 473 SDs, 0 SdLazy, 505 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4763.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 768.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 77.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 34 PreInvPairs, 44 NumberOfFragments, 391 HoareAnnotationTreeSize, 34 FomulaSimplifications, 270 FormulaSimplificationTreeSizeReduction, 100.8ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 576 FormulaSimplificationTreeSizeReductionInter, 639.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 46.4ms SsaConstructionTime, 132.0ms SatisfiabilityAnalysisTime, 1310.5ms InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 933 SizeOfPredicates, 20 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 60/70 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: 34]: Loop Invariant Derived loop invariant: ((((((((x * y + p * a + p + p * b == y * p + y * p * a + q && y == b + 1) && 0 <= x) && !(a + 1 == 0)) && x == a + 1) && 1 <= y) && x <= 1) && p == 1) && y <= 1) || (((((((b == y && a == x) && 0 <= x) && 1 <= y) && x <= 1) && p == 1) && x * y == q + p * a * b) && y <= 1) RESULT: Ultimate proved your program to be correct! Received shutdown request...