/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/divbin_unwindbound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 02:07:51,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 02:07:51,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 02:07:51,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 02:07:51,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 02:07:51,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 02:07:51,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 02:07:51,854 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 02:07:51,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 02:07:51,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 02:07:51,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 02:07:51,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 02:07:51,900 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 02:07:51,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 02:07:51,900 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 02:07:51,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 02:07:51,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 02:07:51,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 02:07:51,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 02:07:51,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 02:07:51,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 02:07:51,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 02:07:51,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 02:07:51,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 02:07:51,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 02:07:51,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 02:07:51,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 02:07:51,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 02:07:51,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 02:07:51,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 02:07:51,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 02:07:52,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 02:07:52,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 02:07:52,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 02:07:52,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 02:07:52,272 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 02:07:52,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound1.i [2021-05-06 02:07:52,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c204d9950/6951bd95a6024d9ba864ab7b83bac03e/FLAGb9ea5700a [2021-05-06 02:07:52,723 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 02:07:52,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound1.i [2021-05-06 02:07:52,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c204d9950/6951bd95a6024d9ba864ab7b83bac03e/FLAGb9ea5700a [2021-05-06 02:07:52,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c204d9950/6951bd95a6024d9ba864ab7b83bac03e [2021-05-06 02:07:52,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 02:07:52,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 02:07:52,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 02:07:52,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 02:07:52,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 02:07:52,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0988d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52, skipping insertion in model container [2021-05-06 02:07:52,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 02:07:52,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 02:07:52,859 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/divbin_unwindbound1.i[958,971] [2021-05-06 02:07:52,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:07:52,876 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 02:07:52,885 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/divbin_unwindbound1.i[958,971] [2021-05-06 02:07:52,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:07:52,924 INFO L208 MainTranslator]: Completed translation [2021-05-06 02:07:52,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52 WrapperNode [2021-05-06 02:07:52,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 02:07:52,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 02:07:52,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 02:07:52,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 02:07:52,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (1/1) ... [2021-05-06 02:07:52,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 02:07:52,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 02:07:52,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 02:07:52,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 02:07:52,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (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 02:07:53,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 02:07:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 02:07:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 02:07:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 02:07:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 02:07:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 02:07:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 02:07:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 02:07:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 02:07:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 02:07:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 02:07:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 02:07:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-06 02:07:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 02:07:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 02:07:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 02:07:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 02:07:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 02:07:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 02:07:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 02:07:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 02:07:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 02:07:53,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 02:07:53,400 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 02:07:53,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:07:53 BoogieIcfgContainer [2021-05-06 02:07:53,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 02:07:53,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 02:07:53,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 02:07:53,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 02:07:53,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 02:07:52" (1/3) ... [2021-05-06 02:07:53,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc367ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:07:53, skipping insertion in model container [2021-05-06 02:07:53,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:07:52" (2/3) ... [2021-05-06 02:07:53,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc367ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:07:53, skipping insertion in model container [2021-05-06 02:07:53,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:07:53" (3/3) ... [2021-05-06 02:07:53,408 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound1.i [2021-05-06 02:07:53,421 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 02:07:53,425 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 02:07:53,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 02:07:53,488 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 02:07:53,489 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 02:07:53,489 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 02:07:53,489 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 02:07:53,489 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 02:07:53,489 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 02:07:53,489 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 02:07:53,489 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 02:07:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 02:07:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 02:07:53,528 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:07:53,529 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:07:53,529 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:07:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:07:53,533 INFO L82 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 1 times [2021-05-06 02:07:53,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:07:53,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193879283] [2021-05-06 02:07:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:07:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 02:07:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 02:07:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 02:07:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 02:07:53,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:07:53,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193879283] [2021-05-06 02:07:53,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193879283] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:07:53,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:07:53,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 02:07:53,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474209756] [2021-05-06 02:07:53,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 02:07:53,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:07:53,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 02:07:53,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:07:53,939 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:07:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:07:54,117 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2021-05-06 02:07:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 02:07:54,119 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 02:07:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:07:54,124 INFO L225 Difference]: With dead ends: 60 [2021-05-06 02:07:54,125 INFO L226 Difference]: Without dead ends: 29 [2021-05-06 02:07:54,127 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:07:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-06 02:07:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-06 02:07:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 02:07:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-05-06 02:07:54,209 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2021-05-06 02:07:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:07:54,210 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-05-06 02:07:54,210 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:07:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-05-06 02:07:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-06 02:07:54,212 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:07:54,212 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:07:54,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 02:07:54,213 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:07:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:07:54,213 INFO L82 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 1 times [2021-05-06 02:07:54,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:07:54,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438132463] [2021-05-06 02:07:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:07:54,258 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:07:54,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837070613] [2021-05-06 02:07:54,259 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 02:07:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:54,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 02:07:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:07:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:54,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:54,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:54,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:54,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 02:07:54,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:07:54,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438132463] [2021-05-06 02:07:54,531 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:07:54,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837070613] [2021-05-06 02:07:54,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837070613] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:07:54,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:07:54,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 02:07:54,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048602293] [2021-05-06 02:07:54,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 02:07:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:07:54,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 02:07:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 02:07:54,534 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:07:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:07:54,553 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-05-06 02:07:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 02:07:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-05-06 02:07:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:07:54,554 INFO L225 Difference]: With dead ends: 42 [2021-05-06 02:07:54,555 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 02:07:54,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 02:07:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 02:07:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 02:07:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 02:07:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-05-06 02:07:54,567 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2021-05-06 02:07:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:07:54,568 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-05-06 02:07:54,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:07:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-05-06 02:07:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-06 02:07:54,572 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:07:54,573 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:07:54,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 02:07:54,791 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:07:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:07:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 1 times [2021-05-06 02:07:54,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:07:54,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496224099] [2021-05-06 02:07:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:07:54,805 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:07:54,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857979139] [2021-05-06 02:07:54,805 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 02:07:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:54,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 02:07:54,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:07:54,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:54,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:55,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:55,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:55,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 02:07:55,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:07:55,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496224099] [2021-05-06 02:07:55,163 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:07:55,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857979139] [2021-05-06 02:07:55,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857979139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 02:07:55,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 02:07:55,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 02:07:55,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997097344] [2021-05-06 02:07:55,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 02:07:55,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:07:55,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 02:07:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-06 02:07:55,165 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:07:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:07:57,514 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-06 02:07:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 02:07:57,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-05-06 02:07:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:07:57,515 INFO L225 Difference]: With dead ends: 42 [2021-05-06 02:07:57,515 INFO L226 Difference]: Without dead ends: 39 [2021-05-06 02:07:57,516 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 136.2ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-06 02:07:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-06 02:07:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-06 02:07:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 02:07:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-06 02:07:57,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2021-05-06 02:07:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:07:57,523 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-06 02:07:57,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:07:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-06 02:07:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 02:07:57,524 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:07:57,524 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:07:57,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:07:57,729 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:07:57,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:07:57,729 INFO L82 PathProgramCache]: Analyzing trace with hash -193375877, now seen corresponding path program 1 times [2021-05-06 02:07:57,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:07:57,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806937001] [2021-05-06 02:07:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:07:57,739 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:07:57,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340375859] [2021-05-06 02:07:57,739 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 02:07:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:57,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 02:07:57,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:07:57,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:57,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:57,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:57,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 02:07:58,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:07:58,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806937001] [2021-05-06 02:07:58,008 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:07:58,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340375859] [2021-05-06 02:07:58,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340375859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 02:07:58,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 02:07:58,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 02:07:58,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566261421] [2021-05-06 02:07:58,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 02:07:58,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:07:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 02:07:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-06 02:07:58,010 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 02:07:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:07:58,235 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-05-06 02:07:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 02:07:58,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-05-06 02:07:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:07:58,236 INFO L225 Difference]: With dead ends: 56 [2021-05-06 02:07:58,236 INFO L226 Difference]: Without dead ends: 52 [2021-05-06 02:07:58,237 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-05-06 02:07:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-06 02:07:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-05-06 02:07:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 02:07:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-05-06 02:07:58,243 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 28 [2021-05-06 02:07:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:07:58,243 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-05-06 02:07:58,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 02:07:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-05-06 02:07:58,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-06 02:07:58,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:07:58,244 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2021-05-06 02:07:58,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:07:58,461 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:07:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:07:58,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 1 times [2021-05-06 02:07:58,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:07:58,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824959276] [2021-05-06 02:07:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:07:58,470 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:07:58,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870989439] [2021-05-06 02:07:58,470 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 02:07:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:07:58,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 02:07:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:07:58,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:07:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-06 02:07:58,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:07:58,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824959276] [2021-05-06 02:07:58,639 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:07:58,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870989439] [2021-05-06 02:07:58,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870989439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:07:58,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:07:58,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 02:07:58,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188616820] [2021-05-06 02:07:58,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 02:07:58,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:07:58,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 02:07:58,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 02:07:58,640 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 02:07:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:07:58,675 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-05-06 02:07:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 02:07:58,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-06 02:07:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:07:58,675 INFO L225 Difference]: With dead ends: 50 [2021-05-06 02:07:58,675 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 02:07:58,676 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-06 02:07:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 02:07:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 02:07:58,676 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 02:07:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 02:07:58,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-05-06 02:07:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:07:58,677 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 02:07:58,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 02:07:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 02:07:58,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 02:07:58,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:07:58,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 02:07:59,141 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 02:07:59,141 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 02:07:59,141 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 02:07:59,141 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 02:07:59,141 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~counter~0 |old(~counter~0)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-06 02:07:59,141 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~counter~0 0) (<= 0 ~counter~0)) [2021-05-06 02:07:59,142 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 15 17) the Hoare annotation is: true [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L194 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|)) (= ~counter~0 |old(~counter~0)|)) [2021-05-06 02:07:59,142 INFO L194 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (< (mod main_~B~0 4294967296) 2147483647) (= ~counter~0 |old(~counter~0)|)) (not (<= 0 |old(~counter~0)|))) [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 26 52) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point L50(line 50) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 26 52) no Hoare annotation was computed. [2021-05-06 02:07:59,142 INFO L198 CegarLoopUtils]: For program point L40(lines 40 49) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L194 CegarLoopUtils]: At program point L40-2(lines 40 49) the Hoare annotation is: (let ((.cse3 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~q~0 0)) (.cse1 (< .cse3 2147483647)) (.cse2 (= main_~A~0 main_~r~0)) (.cse4 (mod main_~r~0 4294967296))) (or (not (<= |old(~counter~0)| 0)) (and .cse0 .cse1 .cse2 (<= 1 .cse3) (< (div (+ .cse4 (- 1)) (- 4294967296)) 1)) (not (<= 0 |old(~counter~0)|)) (let ((.cse5 (mod main_~b~0 4294967296))) (and .cse0 .cse1 (< .cse5 2147483647) .cse2 (< .cse4 .cse5)))))) [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L194 CegarLoopUtils]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse5 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~q~0 0)) (.cse1 (< .cse5 2147483647)) (.cse3 (= main_~A~0 main_~r~0)) (.cse4 (<= 1 .cse5))) (or (not (<= |old(~counter~0)| 0)) (let ((.cse2 (mod main_~b~0 4294967296))) (and .cse0 .cse1 (<= ~counter~0 0) (< .cse2 2147483647) .cse3 .cse4 (<= 0 ~counter~0) (<= 1 .cse2))) (and (<= 1 ~counter~0) .cse0 .cse1 .cse3 .cse4 (< (div (+ (mod main_~r~0 4294967296) (- 1)) (- 4294967296)) 1)) (not (<= 0 |old(~counter~0)|))))) [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 26 52) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|)) (= ~counter~0 |old(~counter~0)|)) [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|))) [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L41-1(lines 40 49) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2021-05-06 02:07:59,143 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2021-05-06 02:07:59,143 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2021-05-06 02:07:59,144 INFO L198 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-05-06 02:07:59,144 INFO L198 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-05-06 02:07:59,144 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-05-06 02:07:59,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 02:07:59 BoogieIcfgContainer [2021-05-06 02:07:59,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 02:07:59,154 INFO L168 Benchmark]: Toolchain (without parser) took 6411.15 ms. Allocated memory was 190.8 MB in the beginning and 229.6 MB in the end (delta: 38.8 MB). Free memory was 154.7 MB in the beginning and 157.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. [2021-05-06 02:07:59,154 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 190.8 MB. Free memory is still 171.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 02:07:59,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.70 ms. Allocated memory is still 190.8 MB. Free memory was 154.5 MB in the beginning and 174.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 02:07:59,155 INFO L168 Benchmark]: Boogie Preprocessor took 30.45 ms. Allocated memory is still 190.8 MB. Free memory was 174.1 MB in the beginning and 172.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 02:07:59,155 INFO L168 Benchmark]: RCFGBuilder took 432.16 ms. Allocated memory is still 190.8 MB. Free memory was 172.6 MB in the beginning and 156.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-06 02:07:59,155 INFO L168 Benchmark]: TraceAbstraction took 5750.77 ms. Allocated memory was 190.8 MB in the beginning and 229.6 MB in the end (delta: 38.8 MB). Free memory was 155.8 MB in the beginning and 157.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 8.0 GB. [2021-05-06 02:07:59,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 190.8 MB. Free memory is still 171.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 193.70 ms. Allocated memory is still 190.8 MB. Free memory was 154.5 MB in the beginning and 174.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.45 ms. Allocated memory is still 190.8 MB. Free memory was 174.1 MB in the beginning and 172.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 432.16 ms. Allocated memory is still 190.8 MB. Free memory was 172.6 MB in the beginning and 156.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5750.77 ms. Allocated memory was 190.8 MB in the beginning and 229.6 MB in the end (delta: 38.8 MB). Free memory was 155.8 MB in the beginning and 157.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5411.9ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 17.8ms, AutomataDifference: 2855.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 241.8ms, InitialAbstractionConstructionTime: 24.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 143 SDtfs, 87 SDslu, 407 SDs, 0 SdLazy, 270 SolverSat, 29 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2319.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 368.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 23 PreInvPairs, 29 NumberOfFragments, 219 HoareAnnotationTreeSize, 23 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 45.1ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 169 FormulaSimplificationTreeSizeReductionInter, 187.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 66.1ms SsaConstructionTime, 211.3ms SatisfiabilityAnalysisTime, 847.9ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 464 SizeOfPredicates, 9 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 21/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((!(\old(counter) <= 0) || (((((((q == 0 && B % 4294967296 < 2147483647) && counter <= 0) && b % 4294967296 < 2147483647) && A == r) && 1 <= B % 4294967296) && 0 <= counter) && 1 <= b % 4294967296)) || (((((1 <= counter && q == 0) && B % 4294967296 < 2147483647) && A == r) && 1 <= B % 4294967296) && (r % 4294967296 + -1) / -4294967296 < 1)) || !(0 <= \old(counter)) RESULT: Ultimate proved your program to be correct! Received shutdown request...