/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_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 14:37:37,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 14:37:37,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 14:37:37,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 14:37:37,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 14:37:37,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 14:37:38,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 14:37:38,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 14:37:38,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 14:37:38,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 14:37:38,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 14:37:38,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 14:37:38,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 14:37:38,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 14:37:38,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 14:37:38,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 14:37:38,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 14:37:38,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 14:37:38,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 14:37:38,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 14:37:38,036 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 14:37:38,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 14:37:38,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 14:37:38,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 14:37:38,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 14:37:38,070 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 14:37:38,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 14:37:38,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 14:37:38,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 14:37:38,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 14:37:38,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 14:37:38,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 14:37:38,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:37:38,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 14:37:38,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 14:37:38,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 14:37:38,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 14:37:38,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 14:37:38,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 14:37:38,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 14:37:38,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 14:37:38,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 14:37:38,430 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 14:37:38,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2021-05-02 14:37:38,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db37044a6/8e95c2f6992048dba9651c47786ead60/FLAG966ada16d [2021-05-02 14:37:38,852 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 14:37:38,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2021-05-02 14:37:38,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db37044a6/8e95c2f6992048dba9651c47786ead60/FLAG966ada16d [2021-05-02 14:37:39,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db37044a6/8e95c2f6992048dba9651c47786ead60 [2021-05-02 14:37:39,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 14:37:39,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 14:37:39,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 14:37:39,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 14:37:39,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 14:37:39,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148feeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39, skipping insertion in model container [2021-05-02 14:37:39,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 14:37:39,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 14:37:39,385 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_unwindbound2.i[958,971] [2021-05-02 14:37:39,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:37:39,399 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 14:37:39,447 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_unwindbound2.i[958,971] [2021-05-02 14:37:39,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:37:39,458 INFO L208 MainTranslator]: Completed translation [2021-05-02 14:37:39,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39 WrapperNode [2021-05-02 14:37:39,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 14:37:39,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 14:37:39,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 14:37:39,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 14:37:39,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (1/1) ... [2021-05-02 14:37:39,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 14:37:39,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 14:37:39,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 14:37:39,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 14:37:39,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (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 14:37:39,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 14:37:39,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 14:37:39,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 14:37:39,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 14:37:39,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 14:37:39,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 14:37:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 14:37:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 14:37:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 14:37:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 14:37:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 14:37:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 14:37:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 14:37:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 14:37:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 14:37:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 14:37:39,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 14:37:39,799 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 14:37:39,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:37:39 BoogieIcfgContainer [2021-05-02 14:37:39,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 14:37:39,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 14:37:39,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 14:37:39,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 14:37:39,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 02:37:39" (1/3) ... [2021-05-02 14:37:39,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e7593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:37:39, skipping insertion in model container [2021-05-02 14:37:39,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:37:39" (2/3) ... [2021-05-02 14:37:39,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e7593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:37:39, skipping insertion in model container [2021-05-02 14:37:39,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:37:39" (3/3) ... [2021-05-02 14:37:39,805 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2021-05-02 14:37:39,808 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 14:37:39,810 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 14:37:39,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 14:37:39,847 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 14:37:39,847 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 14:37:39,847 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 14:37:39,847 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 14:37:39,847 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 14:37:39,847 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 14:37:39,847 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 14:37:39,847 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 14:37:39,860 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) [2021-05-02 14:37:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 14:37:39,863 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:39,864 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 14:37:39,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 1 times [2021-05-02 14:37:39,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:39,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298650200] [2021-05-02 14:37:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:37:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 14:37:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 14:37:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:40,006 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 14:37:40,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:40,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298650200] [2021-05-02 14:37:40,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298650200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:37:40,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:37:40,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:37:40,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97684569] [2021-05-02 14:37:40,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:37:40,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:40,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:37:40,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:37:40,020 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) [2021-05-02 14:37:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:40,086 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2021-05-02 14:37:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:37:40,087 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 14:37:40,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:40,092 INFO L225 Difference]: With dead ends: 60 [2021-05-02 14:37:40,092 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 14:37:40,094 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:37:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 14:37:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 14:37:40,128 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) [2021-05-02 14:37:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-05-02 14:37:40,130 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2021-05-02 14:37:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:40,130 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-05-02 14:37:40,130 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 14:37:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-05-02 14:37:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 14:37:40,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:40,131 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] [2021-05-02 14:37:40,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 14:37:40,132 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:40,132 INFO L82 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 1 times [2021-05-02 14:37:40,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:40,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436386110] [2021-05-02 14:37:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:40,161 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:40,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543524909] [2021-05-02 14:37:40,161 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 14:37:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:40,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 14:37:40,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:40,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,305 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 14:37:40,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:40,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436386110] [2021-05-02 14:37:40,305 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:40,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543524909] [2021-05-02 14:37:40,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543524909] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:37:40,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:37:40,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 14:37:40,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075021937] [2021-05-02 14:37:40,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 14:37:40,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:40,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 14:37:40,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 14:37:40,310 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) [2021-05-02 14:37:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:40,333 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-05-02 14:37:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 14:37:40,333 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 [2021-05-02 14:37:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:40,334 INFO L225 Difference]: With dead ends: 42 [2021-05-02 14:37:40,334 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 14:37:40,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 14:37:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 14:37:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 14:37:40,339 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) [2021-05-02 14:37:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-05-02 14:37:40,339 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2021-05-02 14:37:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:40,340 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-05-02 14:37:40,340 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) [2021-05-02 14:37:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-05-02 14:37:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 14:37:40,341 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:40,341 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] [2021-05-02 14:37:40,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 14:37:40,557 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 1 times [2021-05-02 14:37:40,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:40,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162131873] [2021-05-02 14:37:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:40,571 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:40,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433039580] [2021-05-02 14:37:40,571 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 14:37:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:40,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 14:37:40,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:40,727 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 14:37:40,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:40,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162131873] [2021-05-02 14:37:40,727 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:40,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433039580] [2021-05-02 14:37:40,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433039580] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:37:40,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:37:40,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 14:37:40,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788603295] [2021-05-02 14:37:40,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 14:37:40,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:40,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 14:37:40,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 14:37:40,729 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-05-02 14:37:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:40,750 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-05-02 14:37:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 14:37:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 26 [2021-05-02 14:37:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:40,751 INFO L225 Difference]: With dead ends: 41 [2021-05-02 14:37:40,751 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 14:37:40,751 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 14:37:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 14:37:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-05-02 14:37:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 14:37:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-05-02 14:37:40,757 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2021-05-02 14:37:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:40,758 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-05-02 14:37:40,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-05-02 14:37:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-05-02 14:37:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 14:37:40,759 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:40,759 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] [2021-05-02 14:37:40,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:40,973 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:40,973 INFO L82 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 1 times [2021-05-02 14:37:40,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:40,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945996550] [2021-05-02 14:37:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:40,985 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:40,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705856210] [2021-05-02 14:37:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 14:37:41,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:41,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,224 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 14:37:41,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:41,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945996550] [2021-05-02 14:37:41,225 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:41,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705856210] [2021-05-02 14:37:41,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705856210] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:37:41,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:37:41,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 14:37:41,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435548676] [2021-05-02 14:37:41,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 14:37:41,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:41,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 14:37:41,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:37:41,227 INFO L87 Difference]: Start difference. First operand 33 states and 40 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) [2021-05-02 14:37:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:41,376 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-05-02 14:37:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:37:41,377 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 [2021-05-02 14:37:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:41,378 INFO L225 Difference]: With dead ends: 45 [2021-05-02 14:37:41,378 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 14:37:41,379 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:37:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 14:37:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-05-02 14:37:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 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 14:37:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-05-02 14:37:41,385 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 26 [2021-05-02 14:37:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:41,385 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-05-02 14:37:41,385 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) [2021-05-02 14:37:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-05-02 14:37:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 14:37:41,386 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:41,386 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:37:41,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:41,604 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash -193375877, now seen corresponding path program 1 times [2021-05-02 14:37:41,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:41,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663292630] [2021-05-02 14:37:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:41,616 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:41,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133887146] [2021-05-02 14:37:41,616 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 [2021-05-02 14:37:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:41,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 14:37:41,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 14:37:41,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:41,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663292630] [2021-05-02 14:37:41,727 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:41,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133887146] [2021-05-02 14:37:41,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133887146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:37:41,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:37:41,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 14:37:41,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071875650] [2021-05-02 14:37:41,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 14:37:41,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:41,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 14:37:41,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 14:37:41,728 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-05-02 14:37:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:41,756 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-05-02 14:37:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:37:41,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 28 [2021-05-02 14:37:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:41,757 INFO L225 Difference]: With dead ends: 55 [2021-05-02 14:37:41,757 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 14:37:41,757 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:37:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 14:37:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-02 14:37:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 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 14:37:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 14:37:41,762 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 28 [2021-05-02 14:37:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:41,762 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 14:37:41,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-05-02 14:37:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 14:37:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 14:37:41,763 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:41,763 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] [2021-05-02 14:37:41,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:41,965 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2031725334, now seen corresponding path program 1 times [2021-05-02 14:37:41,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:41,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997308992] [2021-05-02 14:37:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:41,980 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:41,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186003316] [2021-05-02 14:37:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 14:37:42,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:42,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:42,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:42,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:42,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:42,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 14:37:42,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:42,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997308992] [2021-05-02 14:37:42,234 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:42,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186003316] [2021-05-02 14:37:42,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186003316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:37:42,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:37:42,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:37:42,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478071072] [2021-05-02 14:37:42,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:37:42,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:42,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:37:42,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:37:42,235 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 10 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), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 14:37:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:42,482 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-05-02 14:37:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 14:37:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 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), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 14:37:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:42,484 INFO L225 Difference]: With dead ends: 63 [2021-05-02 14:37:42,484 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 14:37:42,484 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 159.9ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:37:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 14:37:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2021-05-02 14:37:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 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 14:37:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 14:37:42,488 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2021-05-02 14:37:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:42,489 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 14:37:42,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 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), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 14:37:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 14:37:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 14:37:42,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:42,489 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] [2021-05-02 14:37:42,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 14:37:42,690 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:42,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 1 times [2021-05-02 14:37:42,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:42,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662151317] [2021-05-02 14:37:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:42,699 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:42,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077626000] [2021-05-02 14:37:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:42,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 14:37:42,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 14:37:42,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:42,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662151317] [2021-05-02 14:37:42,789 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:42,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077626000] [2021-05-02 14:37:42,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077626000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:37:42,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:37:42,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:37:42,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372523851] [2021-05-02 14:37:42,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:37:42,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:42,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:37:42,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:37:42,790 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 14:37:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:42,802 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2021-05-02 14:37:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:37:42,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-05-02 14:37:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:42,803 INFO L225 Difference]: With dead ends: 67 [2021-05-02 14:37:42,803 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 14:37:42,803 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:37:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 14:37:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 14:37:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 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 14:37:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-05-02 14:37:42,808 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 35 [2021-05-02 14:37:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:42,808 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-05-02 14:37:42,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 14:37:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-05-02 14:37:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 14:37:42,809 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:37:42,809 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-05-02 14:37:43,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:43,025 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:37:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:37:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 1 times [2021-05-02 14:37:43,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:37:43,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528232632] [2021-05-02 14:37:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:37:43,039 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:37:43,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624108260] [2021-05-02 14:37:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:37:43,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 14:37:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:37:43,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:37:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 14:37:43,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:37:43,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528232632] [2021-05-02 14:37:43,158 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:37:43,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624108260] [2021-05-02 14:37:43,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624108260] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:37:43,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:37:43,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 14:37:43,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025637306] [2021-05-02 14:37:43,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 14:37:43,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:37:43,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 14:37:43,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:37:43,160 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-05-02 14:37:43,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:37:43,186 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2021-05-02 14:37:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:37:43,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 38 [2021-05-02 14:37:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:37:43,187 INFO L225 Difference]: With dead ends: 44 [2021-05-02 14:37:43,187 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 14:37:43,187 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:37:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 14:37:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 14:37:43,187 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 14:37:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 14:37:43,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-05-02 14:37:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:37:43,188 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 14:37:43,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-05-02 14:37:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 14:37:43,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 14:37:43,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:37:43,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 14:37:43,668 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:37:43,669 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)|)) [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~counter~0 0) (<= 0 ~counter~0)) [2021-05-02 14:37:43,669 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:37:43,669 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 15 17) the Hoare annotation is: true [2021-05-02 14:37:43,669 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:37:43,670 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)|)) [2021-05-02 14:37:43,670 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)|))) [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 26 52) no Hoare annotation was computed. [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point L50(line 50) no Hoare annotation was computed. [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 26 52) no Hoare annotation was computed. [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point L40(lines 40 49) no Hoare annotation was computed. [2021-05-02 14:37:43,670 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)))))) [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2021-05-02 14:37:43,670 INFO L194 CegarLoopUtils]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse0 (= main_~q~0 0)) (.cse2 (= main_~A~0 main_~r~0))) (or (not (<= |old(~counter~0)| 0)) (let ((.cse1 (mod main_~b~0 4294967296))) (and .cse0 (<= ~counter~0 0) (< .cse1 2147483647) .cse2 (= main_~B~0 main_~b~0) (<= 0 ~counter~0) (<= 1 .cse1))) (let ((.cse3 (mod main_~B~0 4294967296))) (and (<= 1 ~counter~0) .cse0 (< .cse3 2147483647) .cse2 (<= 1 .cse3) (< (div (+ (mod main_~r~0 4294967296) (- 1)) (- 4294967296)) 1))) (not (<= 0 |old(~counter~0)|)))) [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-05-02 14:37:43,670 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)|)) [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-05-02 14:37:43,670 INFO L198 CegarLoopUtils]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|)) (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~q~0 0) (< .cse0 2147483647) (= main_~A~0 main_~r~0) (<= 1 .cse0) (= main_~B~0 main_~b~0)))) [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point L41-1(lines 40 49) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-05-02 14:37:43,671 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-05-02 14:37:43,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 02:37:43 BoogieIcfgContainer [2021-05-02 14:37:43,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 14:37:43,682 INFO L168 Benchmark]: Toolchain (without parser) took 4418.82 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 165.3 MB in the beginning and 222.3 MB in the end (delta: -57.0 MB). Peak memory consumption was 121.2 MB. Max. memory is 8.0 GB. [2021-05-02 14:37:43,682 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory is still 182.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 14:37:43,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.15 ms. Allocated memory is still 202.4 MB. Free memory was 165.2 MB in the beginning and 184.7 MB in the end (delta: -19.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 14:37:43,683 INFO L168 Benchmark]: Boogie Preprocessor took 17.16 ms. Allocated memory is still 202.4 MB. Free memory was 184.7 MB in the beginning and 183.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 14:37:43,683 INFO L168 Benchmark]: RCFGBuilder took 323.30 ms. Allocated memory is still 202.4 MB. Free memory was 183.3 MB in the beginning and 167.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 14:37:43,683 INFO L168 Benchmark]: TraceAbstraction took 3880.83 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 166.9 MB in the beginning and 222.3 MB in the end (delta: -55.5 MB). Peak memory consumption was 123.3 MB. Max. memory is 8.0 GB. [2021-05-02 14:37:43,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory is still 182.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 194.15 ms. Allocated memory is still 202.4 MB. Free memory was 165.2 MB in the beginning and 184.7 MB in the end (delta: -19.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.16 ms. Allocated memory is still 202.4 MB. Free memory was 184.7 MB in the beginning and 183.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 323.30 ms. Allocated memory is still 202.4 MB. Free memory was 183.3 MB in the beginning and 167.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3880.83 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 166.9 MB in the beginning and 222.3 MB in the end (delta: -55.5 MB). Peak memory consumption was 123.3 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: 3559.3ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 10.2ms, AutomataDifference: 604.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 263.7ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 236 SDtfs, 124 SDslu, 525 SDs, 0 SdLazy, 298 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 305.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 310.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 56.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 29 PreInvPairs, 37 NumberOfFragments, 232 HoareAnnotationTreeSize, 29 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 37.9ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 251 FormulaSimplificationTreeSizeReductionInter, 216.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 48.9ms SsaConstructionTime, 149.6ms SatisfiabilityAnalysisTime, 773.8ms InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 SizeOfPredicates, 15 NumberOfNonLiveVariables, 854 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 40/48 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 && counter <= 0) && b % 4294967296 < 2147483647) && A == r) && B == b) && 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...