/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/geo2-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:22:20,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:22:20,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:22:20,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:22:20,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:22:20,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:22:20,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:22:20,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:22:20,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:22:20,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:22:20,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:22:20,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:22:20,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:22:20,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:22:20,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:22:20,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:22:20,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:22:20,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:22:20,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:22:20,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:22:20,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 15:22:20,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:22:20,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:22:20,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:22:20,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:22:20,814 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:22:20,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:22:20,814 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:22:20,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:22:20,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:22:20,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:22:20,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:22:20,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:22:20,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:22:20,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:22:20,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:22:20,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:22:21,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:22:21,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:22:21,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:22:21,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:22:21,091 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:22:21,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-05-02 15:22:21,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934b0e583/27ee4841ab454995b0b2fdf76b92ba1c/FLAG2cc0aa55b [2021-05-02 15:22:21,546 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:22:21,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-05-02 15:22:21,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934b0e583/27ee4841ab454995b0b2fdf76b92ba1c/FLAG2cc0aa55b [2021-05-02 15:22:21,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934b0e583/27ee4841ab454995b0b2fdf76b92ba1c [2021-05-02 15:22:21,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:22:21,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:22:21,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:22:21,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:22:21,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:22:21,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0d186a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21, skipping insertion in model container [2021-05-02 15:22:21,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:22:21,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:22:21,678 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/geo2-ll_valuebound10.c[525,538] [2021-05-02 15:22:21,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:22:21,693 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:22:21,703 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/geo2-ll_valuebound10.c[525,538] [2021-05-02 15:22:21,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:22:21,719 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:22:21,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21 WrapperNode [2021-05-02 15:22:21,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:22:21,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:22:21,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:22:21,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:22:21,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... [2021-05-02 15:22:21,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:22:21,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:22:21,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:22:21,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:22:21,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:22:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:22:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:22:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:22:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:22:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:22:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:22:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:22:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:22:22,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:22:22,109 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:22:22,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:22:22 BoogieIcfgContainer [2021-05-02 15:22:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:22:22,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:22:22,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:22:22,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:22:22,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:22:21" (1/3) ... [2021-05-02 15:22:22,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbf671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:22:22, skipping insertion in model container [2021-05-02 15:22:22,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:21" (2/3) ... [2021-05-02 15:22:22,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbf671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:22:22, skipping insertion in model container [2021-05-02 15:22:22,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:22:22" (3/3) ... [2021-05-02 15:22:22,114 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound10.c [2021-05-02 15:22:22,118 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:22:22,120 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:22:22,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:22:22,171 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:22:22,171 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:22:22,171 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:22:22,171 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:22:22,171 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:22:22,171 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:22:22,171 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:22:22,171 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:22:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 15:22:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 15:22:22,208 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:22,209 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] [2021-05-02 15:22:22,209 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 1 times [2021-05-02 15:22:22,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:22,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115360810] [2021-05-02 15:22:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:22,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:22:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:22:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:22:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 15:22:22,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:22,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115360810] [2021-05-02 15:22:22,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115360810] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:22:22,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:22:22,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:22:22,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080163554] [2021-05-02 15:22:22,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:22:22,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:22,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:22:22,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:22:22,466 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-05-02 15:22:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:22,555 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-05-02 15:22:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:22:22,556 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 [2021-05-02 15:22:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:22,561 INFO L225 Difference]: With dead ends: 51 [2021-05-02 15:22:22,562 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 15:22:22,564 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:22:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 15:22:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 15:22:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 15:22:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 15:22:22,589 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 15:22:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:22,589 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 15:22:22,590 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) [2021-05-02 15:22:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 15:22:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 15:22:22,591 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:22,591 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] [2021-05-02 15:22:22,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:22:22,591 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:22,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 1 times [2021-05-02 15:22:22,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:22,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925598457] [2021-05-02 15:22:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:22,635 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:22:22,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294880311] [2021-05-02 15:22:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:22,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 15:22:22,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:22:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:22,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:22,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:22,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 15:22:22,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:22,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925598457] [2021-05-02 15:22:22,889 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:22:22,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294880311] [2021-05-02 15:22:22,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294880311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:22:22,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:22:22,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:22:22,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395263636] [2021-05-02 15:22:22,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:22:22,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:22:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:22:22,892 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:22:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:22,959 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 15:22:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:22:22,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (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 23 [2021-05-02 15:22:22,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:22,960 INFO L225 Difference]: With dead ends: 34 [2021-05-02 15:22:22,960 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 15:22:22,961 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:22:22,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 15:22:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 15:22:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 15:22:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-05-02 15:22:22,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2021-05-02 15:22:22,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:22,968 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-05-02 15:22:22,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:22:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-05-02 15:22:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 15:22:22,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:22,969 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:22:23,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:22:23,188 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 156588053, now seen corresponding path program 1 times [2021-05-02 15:22:23,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:23,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221336733] [2021-05-02 15:22:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:23,198 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:22:23,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253970811] [2021-05-02 15:22:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:23,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:22:23,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:22:23,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 15:22:23,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:23,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221336733] [2021-05-02 15:22:23,468 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:22:23,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253970811] [2021-05-02 15:22:23,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253970811] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:22:23,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:22:23,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 15:22:23,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512979770] [2021-05-02 15:22:23,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 15:22:23,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 15:22:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:22:23,470 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 15:22:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:23,524 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-05-02 15:22:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:22:23,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2021-05-02 15:22:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:23,525 INFO L225 Difference]: With dead ends: 41 [2021-05-02 15:22:23,526 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 15:22:23,526 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:22:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 15:22:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 15:22:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 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) [2021-05-02 15:22:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-05-02 15:22:23,531 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2021-05-02 15:22:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:23,531 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-05-02 15:22:23,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 15:22:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-05-02 15:22:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 15:22:23,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:23,545 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:22:23,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:23,760 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1865789967, now seen corresponding path program 2 times [2021-05-02 15:22:23,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:23,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869259392] [2021-05-02 15:22:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:23,769 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:22:23,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671712513] [2021-05-02 15:22:23,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:23,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:22:23,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:22:23,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 15:22:23,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:22:23,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 15:22:24,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:24,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869259392] [2021-05-02 15:22:24,186 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:22:24,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671712513] [2021-05-02 15:22:24,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671712513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:22:24,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:22:24,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 15:22:24,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104196431] [2021-05-02 15:22:24,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 15:22:24,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:24,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 15:22:24,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 15:22:24,188 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 15:22:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:25,049 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-02 15:22:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 15:22:25,049 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2021-05-02 15:22:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:25,050 INFO L225 Difference]: With dead ends: 48 [2021-05-02 15:22:25,050 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 15:22:25,051 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 186.4ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 15:22:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 15:22:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-02 15:22:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 15:22:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-05-02 15:22:25,056 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2021-05-02 15:22:25,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:25,057 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-05-02 15:22:25,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 15:22:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-05-02 15:22:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 15:22:25,057 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:25,058 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:22:25,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:25,273 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:25,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:25,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1145718933, now seen corresponding path program 3 times [2021-05-02 15:22:25,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:25,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818773598] [2021-05-02 15:22:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:25,286 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:22:25,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143243985] [2021-05-02 15:22:25,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:25,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 15:22:25,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:22:25,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 15:22:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:22:25,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:25,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:25,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 15:22:25,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:25,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818773598] [2021-05-02 15:22:25,584 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:22:25,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143243985] [2021-05-02 15:22:25,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143243985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:22:25,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:22:25,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 15:22:25,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875868727] [2021-05-02 15:22:25,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:22:25,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:25,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:22:25,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:22:25,585 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-02 15:22:44,920 WARN L205 SmtUtils]: Spent 17.03 s on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-02 15:22:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:47,076 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-02 15:22:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:22:47,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-05-02 15:22:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:47,077 INFO L225 Difference]: With dead ends: 48 [2021-05-02 15:22:47,077 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:22:47,077 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 17267.6ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:22:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:22:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:22:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 15:22:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:22:47,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-05-02 15:22:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:47,078 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:22:47,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-02 15:22:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:22:47,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:22:47,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:47,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:22:47,608 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-05-02 15:22:47,811 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-05-02 15:22:55,264 WARN L205 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 68 DAG size of output: 22 [2021-05-02 15:22:55,266 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2021-05-02 15:22:55,266 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:22:55,267 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:22:55,267 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:22:55,268 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse3 (<= 0 main_~z~0)) (.cse4 (<= main_~z~0 10))) (or (and (let ((.cse0 (= main_~z~0 0))) (or (and (= main_~y~0 0) .cse0) (let ((.cse1 (+ main_~x~0 (- 1)))) (and (= (mod .cse1 main_~z~0) 0) (not .cse0) (let ((.cse2 (div .cse1 main_~z~0))) (= (+ (* main_~z~0 .cse2) 1) (+ .cse2 (* main_~z~0 (div main_~y~0 main_~z~0))))) (= (mod main_~y~0 main_~z~0) 0))))) .cse3 .cse4) (and (= main_~y~0 1) .cse3 .cse4 (= main_~x~0 1)))) [2021-05-02 15:22:55,269 INFO L194 CegarLoopUtils]: At program point L35-3(lines 35 44) the Hoare annotation is: (let ((.cse0 (<= 0 main_~z~0)) (.cse1 (<= main_~z~0 10)) (.cse2 (= main_~x~0 1))) (or (and (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 (* main_~y~0 main_~z~0))) .cse0 .cse1 (= (mod main_~y~0 main_~z~0) 0)) (and (= main_~y~0 1) .cse0 .cse1 .cse2) (and (= main_~z~0 0) .cse2))) [2021-05-02 15:22:55,269 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 23 47) the Hoare annotation is: true [2021-05-02 15:22:55,269 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 0 main_~z~0) (<= main_~z~0 10)) [2021-05-02 15:22:55,269 INFO L198 CegarLoopUtils]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-05-02 15:22:55,269 INFO L201 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 23 47) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point L45(line 45) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 23 47) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (let ((.cse3 (<= 0 main_~z~0)) (.cse4 (<= main_~z~0 10))) (or (and (let ((.cse0 (= main_~z~0 0))) (or (and (= main_~y~0 0) .cse0) (let ((.cse1 (+ main_~x~0 (- 1)))) (and (= (mod .cse1 main_~z~0) 0) (not .cse0) (let ((.cse2 (div .cse1 main_~z~0))) (= (+ (* main_~z~0 .cse2) 1) (+ .cse2 (* main_~z~0 (div main_~y~0 main_~z~0))))) (= (mod main_~y~0 main_~z~0) 0))))) .cse3 .cse4) (and (= main_~y~0 1) .cse3 .cse4 (= main_~x~0 1)))) [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 44) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:22:55,270 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-05-02 15:22:55,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:22:55 BoogieIcfgContainer [2021-05-02 15:22:55,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:22:55,281 INFO L168 Benchmark]: Toolchain (without parser) took 33710.87 ms. Allocated memory was 177.2 MB in the beginning and 240.1 MB in the end (delta: 62.9 MB). Free memory was 141.1 MB in the beginning and 137.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:55,281 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 177.2 MB. Free memory is still 157.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:22:55,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.34 ms. Allocated memory is still 177.2 MB. Free memory was 141.0 MB in the beginning and 131.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:55,282 INFO L168 Benchmark]: Boogie Preprocessor took 81.47 ms. Allocated memory is still 177.2 MB. Free memory was 131.3 MB in the beginning and 159.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:55,282 INFO L168 Benchmark]: RCFGBuilder took 307.17 ms. Allocated memory is still 177.2 MB. Free memory was 159.9 MB in the beginning and 145.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:55,282 INFO L168 Benchmark]: TraceAbstraction took 33170.17 ms. Allocated memory was 177.2 MB in the beginning and 240.1 MB in the end (delta: 62.9 MB). Free memory was 144.7 MB in the beginning and 137.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:55,283 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 177.2 MB. Free memory is still 157.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 148.34 ms. Allocated memory is still 177.2 MB. Free memory was 141.0 MB in the beginning and 131.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.47 ms. Allocated memory is still 177.2 MB. Free memory was 131.3 MB in the beginning and 159.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 307.17 ms. Allocated memory is still 177.2 MB. Free memory was 159.9 MB in the beginning and 145.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33170.17 ms. Allocated memory was 177.2 MB in the beginning and 240.1 MB in the end (delta: 62.9 MB). Free memory was 144.7 MB in the beginning and 137.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25109.2ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 20.9ms, AutomataDifference: 22590.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7987.0ms, InitialAbstractionConstructionTime: 31.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 114 SDtfs, 81 SDslu, 505 SDs, 0 SdLazy, 305 SolverSat, 25 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5132.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 17622.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 22 PreInvPairs, 35 NumberOfFragments, 222 HoareAnnotationTreeSize, 22 FomulaSimplifications, 268 FormulaSimplificationTreeSizeReduction, 162.6ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 795 FormulaSimplificationTreeSizeReductionInter, 7816.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 37.1ms SsaConstructionTime, 117.1ms SatisfiabilityAnalysisTime, 1124.7ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 653 SizeOfPredicates, 11 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 52/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((y == 0 && z == 0) || ((((x + -1) % z == 0 && !(z == 0)) && z * ((x + -1) / z) + 1 == (x + -1) / z + z * (y / z)) && y % z == 0)) && 0 <= z) && z <= 10) || (((y == 1 && 0 <= z) && z <= 10) && x == 1) RESULT: Ultimate proved your program to be correct! Received shutdown request...