/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/geo3-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 03:04:06,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 03:04:06,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 03:04:07,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 03:04:07,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 03:04:07,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 03:04:07,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 03:04:07,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 03:04:07,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 03:04:07,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 03:04:07,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 03:04:07,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 03:04:07,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 03:04:07,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 03:04:07,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 03:04:07,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 03:04:07,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 03:04:07,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 03:04:07,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 03:04:07,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 03:04:07,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 03:04:07,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 03:04:07,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 03:04:07,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 03:04:07,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 03:04:07,086 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 03:04:07,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 03:04:07,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 03:04:07,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 03:04:07,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 03:04:07,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 03:04:07,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 03:04:07,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 03:04:07,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 03:04:07,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 03:04:07,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 03:04:07,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 03:04:07,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 03:04:07,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 03:04:07,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 03:04:07,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 03:04:07,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 03:04:07,372 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 03:04:07,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c [2021-05-06 03:04:07,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2407a258/6a621f572d5347c29b83f38914d25311/FLAGc545d18ca [2021-05-06 03:04:07,755 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 03:04:07,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c [2021-05-06 03:04:07,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2407a258/6a621f572d5347c29b83f38914d25311/FLAGc545d18ca [2021-05-06 03:04:08,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2407a258/6a621f572d5347c29b83f38914d25311 [2021-05-06 03:04:08,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 03:04:08,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 03:04:08,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 03:04:08,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 03:04:08,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 03:04:08,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325d9647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08, skipping insertion in model container [2021-05-06 03:04:08,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 03:04:08,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 03:04:08,310 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/geo3-ll_valuebound5.c[525,538] [2021-05-06 03:04:08,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 03:04:08,329 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 03:04:08,340 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/geo3-ll_valuebound5.c[525,538] [2021-05-06 03:04:08,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 03:04:08,363 INFO L208 MainTranslator]: Completed translation [2021-05-06 03:04:08,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08 WrapperNode [2021-05-06 03:04:08,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 03:04:08,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 03:04:08,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 03:04:08,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 03:04:08,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... [2021-05-06 03:04:08,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 03:04:08,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 03:04:08,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 03:04:08,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 03:04:08,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 03:04:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 03:04:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 03:04:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 03:04:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 03:04:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 03:04:08,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 03:04:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 03:04:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 03:04:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 03:04:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 03:04:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 03:04:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 03:04:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 03:04:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 03:04:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 03:04:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 03:04:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 03:04:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 03:04:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 03:04:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 03:04:08,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 03:04:08,728 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 03:04:08,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 03:04:08 BoogieIcfgContainer [2021-05-06 03:04:08,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 03:04:08,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 03:04:08,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 03:04:08,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 03:04:08,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 03:04:08" (1/3) ... [2021-05-06 03:04:08,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6c3189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 03:04:08, skipping insertion in model container [2021-05-06 03:04:08,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:04:08" (2/3) ... [2021-05-06 03:04:08,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6c3189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 03:04:08, skipping insertion in model container [2021-05-06 03:04:08,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 03:04:08" (3/3) ... [2021-05-06 03:04:08,733 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound5.c [2021-05-06 03:04:08,737 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 03:04:08,739 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 03:04:08,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 03:04:08,779 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 03:04:08,779 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 03:04:08,779 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 03:04:08,779 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 03:04:08,779 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 03:04:08,779 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 03:04:08,779 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 03:04:08,779 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 03:04:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 03:04:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 03:04:08,792 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:04:08,793 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:04:08,793 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:04:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:04:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash -779299010, now seen corresponding path program 1 times [2021-05-06 03:04:08,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:04:08,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104530637] [2021-05-06 03:04:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:04:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 03:04:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 03:04:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 03:04:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-06 03:04:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 03:04:09,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:04:09,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104530637] [2021-05-06 03:04:09,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104530637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:04:09,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:04:09,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 03:04:09,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921565450] [2021-05-06 03:04:09,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 03:04:09,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:04:09,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 03:04:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 03:04:09,026 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 03:04:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:04:09,119 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-05-06 03:04:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 03:04:09,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-06 03:04:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:04:09,126 INFO L225 Difference]: With dead ends: 55 [2021-05-06 03:04:09,126 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 03:04:09,131 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 03:04:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 03:04:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-06 03:04:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 03:04:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-05-06 03:04:09,166 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2021-05-06 03:04:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:04:09,166 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-05-06 03:04:09,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 03:04:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-05-06 03:04:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 03:04:09,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:04:09,168 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:04:09,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 03:04:09,168 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:04:09,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:04:09,172 INFO L82 PathProgramCache]: Analyzing trace with hash -963850242, now seen corresponding path program 1 times [2021-05-06 03:04:09,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:04:09,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615576924] [2021-05-06 03:04:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:04:09,199 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:04:09,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602763646] [2021-05-06 03:04:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:04:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 03:04:09,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:04:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:09,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:09,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 03:04:09,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:04:09,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615576924] [2021-05-06 03:04:09,425 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:04:09,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602763646] [2021-05-06 03:04:09,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602763646] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:04:09,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:04:09,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 03:04:09,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844012453] [2021-05-06 03:04:09,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 03:04:09,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:04:09,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 03:04:09,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 03:04:09,427 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 03:04:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:04:09,458 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-05-06 03:04:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 03:04:09,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-05-06 03:04:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:04:09,461 INFO L225 Difference]: With dead ends: 36 [2021-05-06 03:04:09,461 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 03:04:09,462 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:04:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 03:04:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-06 03:04:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 03:04:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-05-06 03:04:09,473 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2021-05-06 03:04:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:04:09,473 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-05-06 03:04:09,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 03:04:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-05-06 03:04:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-06 03:04:09,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:04:09,474 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:04:09,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 03:04:09,681 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:04:09,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:04:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash -425626518, now seen corresponding path program 1 times [2021-05-06 03:04:09,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:04:09,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950141409] [2021-05-06 03:04:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:04:09,691 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:04:09,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360979622] [2021-05-06 03:04:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:04:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:04:09,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-06 03:04:09,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:04:09,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:09,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:09,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 03:04:09,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:04:09,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950141409] [2021-05-06 03:04:09,913 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:04:09,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360979622] [2021-05-06 03:04:09,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360979622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:04:09,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:04:09,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 03:04:09,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447839095] [2021-05-06 03:04:09,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 03:04:09,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:04:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 03:04:09,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-06 03:04:09,914 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 03:04:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:04:10,220 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-06 03:04:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 03:04:10,220 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-05-06 03:04:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:04:10,221 INFO L225 Difference]: With dead ends: 43 [2021-05-06 03:04:10,221 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 03:04:10,221 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-05-06 03:04:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 03:04:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-06 03:04:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 03:04:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-06 03:04:10,229 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2021-05-06 03:04:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:04:10,229 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-06 03:04:10,229 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 03:04:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-06 03:04:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-06 03:04:10,230 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:04:10,230 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:04:10,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:04:10,437 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:04:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:04:10,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1540046462, now seen corresponding path program 2 times [2021-05-06 03:04:10,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:04:10,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461963446] [2021-05-06 03:04:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:04:10,447 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:04:10,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477573570] [2021-05-06 03:04:10,447 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 [2021-05-06 03:04:10,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 03:04:10,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:04:10,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-06 03:04:10,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:04:10,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:04:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 03:04:10,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:04:10,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461963446] [2021-05-06 03:04:10,792 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:04:10,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477573570] [2021-05-06 03:04:10,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477573570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:04:10,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:04:10,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 03:04:10,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072572661] [2021-05-06 03:04:10,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 03:04:10,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:04:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 03:04:10,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-06 03:04:10,793 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 03:04:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:04:10,941 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-06 03:04:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 03:04:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2021-05-06 03:04:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:04:10,942 INFO L225 Difference]: With dead ends: 50 [2021-05-06 03:04:10,942 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 03:04:10,943 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-05-06 03:04:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 03:04:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-06 03:04:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 03:04:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-05-06 03:04:10,949 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 43 [2021-05-06 03:04:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:04:10,949 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-05-06 03:04:10,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 03:04:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-05-06 03:04:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-06 03:04:10,950 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:04:10,950 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:04:11,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:04:11,167 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:04:11,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:04:11,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1099019754, now seen corresponding path program 3 times [2021-05-06 03:04:11,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:04:11,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556589860] [2021-05-06 03:04:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:04:11,176 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:04:11,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737773254] [2021-05-06 03:04:11,176 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 [2021-05-06 03:04:11,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-06 03:04:11,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:04:11,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 03:04:11,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:05:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:05:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-06 03:05:24,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:05:24,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556589860] [2021-05-06 03:05:24,673 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:05:24,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737773254] [2021-05-06 03:05:24,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737773254] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:05:24,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:05:24,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 03:05:24,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229095607] [2021-05-06 03:05:24,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 03:05:24,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:05:24,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 03:05:24,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 03:05:24,674 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-06 03:05:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:05:34,703 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-05-06 03:05:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 03:05:34,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2021-05-06 03:05:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:05:34,704 INFO L225 Difference]: With dead ends: 47 [2021-05-06 03:05:34,704 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 03:05:34,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 72902.6ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-06 03:05:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 03:05:34,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 03:05:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 03:05:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 03:05:34,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-05-06 03:05:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:05:34,705 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 03:05:34,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-06 03:05:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 03:05:34,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 03:05:34,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:05:34,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 03:05:44,642 WARN L205 SmtUtils]: Spent 9.60 s on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-05-06 03:05:49,470 WARN L205 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2021-05-06 03:05:50,008 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 03:05:50,010 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-05-06 03:05:50,010 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~z~0 5) (<= 0 main_~a~0) (<= main_~a~0 5) (<= 0 main_~z~0)) [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~z~0 5) (<= 0 main_~z~0)) [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L201 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 21 48) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point L46(line 46) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 21 48) no Hoare annotation was computed. [2021-05-06 03:05:50,011 INFO L194 CegarLoopUtils]: At program point L36-2(lines 36 45) the Hoare annotation is: (let ((.cse0 (<= main_~z~0 5)) (.cse1 (<= 0 main_~a~0)) (.cse5 (<= main_~a~0 5)) (.cse6 (= (* main_~z~0 main_~a~0) main_~az~0)) (.cse7 (<= 0 main_~z~0))) (or (and .cse0 .cse1 (let ((.cse4 (= main_~z~0 0))) (or (let ((.cse3 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse2 (div .cse3 main_~z~0))) (= (+ (* main_~z~0 .cse2) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse2))) (= (mod .cse3 main_~z~0) 0) (not .cse4) (= (mod main_~y~0 main_~z~0) 0))) (and (= main_~a~0 main_~x~0) .cse4))) .cse5 .cse6 .cse7) (and .cse0 .cse1 (= (+ main_~x~0 (* main_~y~0 main_~az~0)) (+ main_~a~0 (* main_~x~0 main_~z~0))) (= main_~y~0 1) .cse5 .cse6 .cse7))) [2021-05-06 03:05:50,011 INFO L194 CegarLoopUtils]: At program point L36-3(lines 36 45) the Hoare annotation is: (let ((.cse5 (* main_~z~0 main_~a~0))) (let ((.cse3 (= main_~a~0 main_~x~0)) (.cse4 (= .cse5 main_~az~0))) (or (and (<= main_~z~0 5) (<= 0 main_~a~0) (let ((.cse2 (= main_~z~0 0))) (or (let ((.cse1 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse0 (div .cse1 main_~z~0))) (= (+ (* main_~z~0 .cse0) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse0))) (= (mod .cse1 main_~z~0) 0) (not .cse2) (= (mod main_~y~0 main_~z~0) 0))) (and .cse3 .cse2))) (<= main_~a~0 5) .cse4 (<= 0 main_~z~0)) (and .cse4 (= main_~x~0 (+ .cse5 main_~a~0)) (= main_~z~0 main_~y~0)) (and .cse3 (= main_~y~0 1) .cse4)))) [2021-05-06 03:05:50,012 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 21 48) the Hoare annotation is: true [2021-05-06 03:05:50,012 INFO L194 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (<= main_~z~0 5)) (.cse1 (<= 0 main_~a~0)) (.cse5 (<= main_~a~0 5)) (.cse6 (= (* main_~z~0 main_~a~0) main_~az~0)) (.cse7 (<= 0 main_~z~0))) (or (and .cse0 .cse1 (let ((.cse4 (= main_~z~0 0))) (or (let ((.cse3 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse2 (div .cse3 main_~z~0))) (= (+ (* main_~z~0 .cse2) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse2))) (= (mod .cse3 main_~z~0) 0) (not .cse4) (= (mod main_~y~0 main_~z~0) 0))) (and (= main_~a~0 main_~x~0) .cse4))) .cse5 .cse6 .cse7) (and .cse0 .cse1 (= (+ main_~x~0 (* main_~y~0 main_~az~0)) (+ main_~a~0 (* main_~x~0 main_~z~0))) (= main_~y~0 1) .cse5 .cse6 .cse7))) [2021-05-06 03:05:50,012 INFO L198 CegarLoopUtils]: For program point L37-1(lines 36 45) no Hoare annotation was computed. [2021-05-06 03:05:50,012 INFO L198 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-05-06 03:05:50,012 INFO L198 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-05-06 03:05:50,012 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-05-06 03:05:50,012 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-05-06 03:05:50,012 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-05-06 03:05:50,012 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-05-06 03:05:50,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 03:05:50 BoogieIcfgContainer [2021-05-06 03:05:50,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 03:05:50,022 INFO L168 Benchmark]: Toolchain (without parser) took 101846.22 ms. Allocated memory was 190.8 MB in the beginning and 229.6 MB in the end (delta: 38.8 MB). Free memory was 156.4 MB in the beginning and 183.3 MB in the end (delta: -27.0 MB). Peak memory consumption was 115.4 MB. Max. memory is 8.0 GB. [2021-05-06 03:05:50,022 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 190.8 MB. Free memory is still 172.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 03:05:50,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.76 ms. Allocated memory is still 190.8 MB. Free memory was 156.2 MB in the beginning and 146.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 03:05:50,022 INFO L168 Benchmark]: Boogie Preprocessor took 70.42 ms. Allocated memory is still 190.8 MB. Free memory was 146.5 MB in the beginning and 174.1 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 03:05:50,022 INFO L168 Benchmark]: RCFGBuilder took 293.28 ms. Allocated memory is still 190.8 MB. Free memory was 173.8 MB in the beginning and 159.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 03:05:50,023 INFO L168 Benchmark]: TraceAbstraction took 101291.58 ms. Allocated memory was 190.8 MB in the beginning and 229.6 MB in the end (delta: 38.8 MB). Free memory was 158.8 MB in the beginning and 183.3 MB in the end (delta: -24.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 8.0 GB. [2021-05-06 03:05:50,023 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 190.8 MB. Free memory is still 172.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 185.76 ms. Allocated memory is still 190.8 MB. Free memory was 156.2 MB in the beginning and 146.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.42 ms. Allocated memory is still 190.8 MB. Free memory was 146.5 MB in the beginning and 174.1 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 293.28 ms. Allocated memory is still 190.8 MB. Free memory was 173.8 MB in the beginning and 159.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 101291.58 ms. Allocated memory was 190.8 MB in the beginning and 229.6 MB in the end (delta: 38.8 MB). Free memory was 158.8 MB in the beginning and 183.3 MB in the end (delta: -24.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 86128.9ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 9.2ms, AutomataDifference: 10643.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 15103.1ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 128 SDtfs, 79 SDslu, 474 SDs, 0 SdLazy, 273 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10422.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 73160.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 25 PreInvPairs, 39 NumberOfFragments, 362 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 118.5ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 920 FormulaSimplificationTreeSizeReductionInter, 14977.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 43.6ms SsaConstructionTime, 538.1ms SatisfiabilityAnalysisTime, 73734.4ms InterpolantComputationTime, 187 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 783 SizeOfPredicates, 10 NumberOfNonLiveVariables, 575 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 93/112 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: (((((z <= 5 && 0 <= a) && ((((z * ((x + a * -1) / z) + a == az * (y / z) + (x + a * -1) / z && (x + a * -1) % z == 0) && !(z == 0)) && y % z == 0) || (a == x && z == 0))) && a <= 5) && z * a == az) && 0 <= z) || ((((((z <= 5 && 0 <= a) && x + y * az == a + x * z) && y == 1) && a <= 5) && z * a == az) && 0 <= z) RESULT: Ultimate proved your program to be correct! Received shutdown request...