/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_valuebound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 14:40:02,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 14:40:02,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 14:40:02,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 14:40:02,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 14:40:02,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 14:40:02,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 14:40:02,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 14:40:02,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 14:40:02,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 14:40:02,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 14:40:02,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 14:40:02,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 14:40:02,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 14:40:02,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 14:40:02,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 14:40:02,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 14:40:02,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 14:40:02,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 14:40:02,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 14:40:02,236 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 14:40:02,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 14:40:02,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 14:40:02,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 14:40:02,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 14:40:02,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 14:40:02,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:40:02,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 14:40:02,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 14:40:02,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 14:40:02,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 14:40:02,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 14:40:02,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 14:40:02,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 14:40:02,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 14:40:02,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 14:40:02,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 14:40:02,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 14:40:02,507 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 14:40:02,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i [2021-05-02 14:40:02,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58459aed5/5253235b574241229880956259f861ea/FLAGb94b79c2b [2021-05-02 14:40:02,963 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 14:40:02,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i [2021-05-02 14:40:02,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58459aed5/5253235b574241229880956259f861ea/FLAGb94b79c2b [2021-05-02 14:40:02,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58459aed5/5253235b574241229880956259f861ea [2021-05-02 14:40:02,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 14:40:02,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 14:40:02,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 14:40:02,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 14:40:03,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 14:40:03,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:40:02" (1/1) ... [2021-05-02 14:40:03,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2921b01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03, skipping insertion in model container [2021-05-02 14:40:03,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:40:02" (1/1) ... [2021-05-02 14:40:03,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 14:40:03,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 14:40:03,119 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_valuebound1.i[958,971] [2021-05-02 14:40:03,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:40:03,155 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 14:40:03,173 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_valuebound1.i[958,971] [2021-05-02 14:40:03,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:40:03,207 INFO L208 MainTranslator]: Completed translation [2021-05-02 14:40:03,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03 WrapperNode [2021-05-02 14:40:03,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 14:40:03,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 14:40:03,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 14:40:03,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 14:40:03,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (1/1) ... [2021-05-02 14:40:03,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 14:40:03,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 14:40:03,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 14:40:03,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 14:40:03,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (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 14:40:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 14:40:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 14:40:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 14:40:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 14:40:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 14:40:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 14:40:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 14:40:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 14:40:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 14:40:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 14:40:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 14:40:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 14:40:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 14:40:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 14:40:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 14:40:03,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 14:40:03,545 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 14:40:03,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:40:03 BoogieIcfgContainer [2021-05-02 14:40:03,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 14:40:03,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 14:40:03,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 14:40:03,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 14:40:03,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 02:40:02" (1/3) ... [2021-05-02 14:40:03,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5773e261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:40:03, skipping insertion in model container [2021-05-02 14:40:03,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:40:03" (2/3) ... [2021-05-02 14:40:03,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5773e261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:40:03, skipping insertion in model container [2021-05-02 14:40:03,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:40:03" (3/3) ... [2021-05-02 14:40:03,551 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2021-05-02 14:40:03,554 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 14:40:03,557 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 14:40:03,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 14:40:03,584 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 14:40:03,584 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 14:40:03,584 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 14:40:03,584 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 14:40:03,585 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 14:40:03,585 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 14:40:03,585 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 14:40:03,585 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 14:40:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 14:40:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 14:40:03,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:40:03,600 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 14:40:03,600 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:40:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:40:03,605 INFO L82 PathProgramCache]: Analyzing trace with hash 291922115, now seen corresponding path program 1 times [2021-05-02 14:40:03,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:40:03,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161762233] [2021-05-02 14:40:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:40:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:40:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 14:40:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 14:40:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 14:40:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:03,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 14:40:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 14:40:03,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:40:03,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161762233] [2021-05-02 14:40:03,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161762233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:40:03,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:40:03,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:40:03,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835658668] [2021-05-02 14:40:03,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:40:03,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:40:03,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:40:03,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:40:03,850 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 14:40:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:40:03,967 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2021-05-02 14:40:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:40:03,969 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, (7), 3 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 34 [2021-05-02 14:40:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:40:03,978 INFO L225 Difference]: With dead ends: 61 [2021-05-02 14:40:03,979 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 14:40:03,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:40:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 14:40:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 14:40:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 14:40:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 14:40:04,034 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2021-05-02 14:40:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:40:04,035 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 14:40:04,035 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 14:40:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 14:40:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 14:40:04,036 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:40:04,036 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 14:40:04,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 14:40:04,037 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:40:04,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:40:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash -245963777, now seen corresponding path program 1 times [2021-05-02 14:40:04,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:40:04,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449535289] [2021-05-02 14:40:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:40:04,056 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:40:04,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432629894] [2021-05-02 14:40:04,056 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 14:40:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:04,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 14:40:04,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:40:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 14:40:04,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:40:04,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449535289] [2021-05-02 14:40:04,489 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:40:04,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432629894] [2021-05-02 14:40:04,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432629894] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:40:04,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:40:04,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:40:04,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081203349] [2021-05-02 14:40:04,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:40:04,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:40:04,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:40:04,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:40:04,491 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 14:40:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:40:04,665 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-05-02 14:40:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 14:40:04,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2021-05-02 14:40:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:40:04,670 INFO L225 Difference]: With dead ends: 44 [2021-05-02 14:40:04,670 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 14:40:04,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-02 14:40:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 14:40:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 14:40:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 14:40:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-05-02 14:40:04,677 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 35 [2021-05-02 14:40:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:40:04,678 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-05-02 14:40:04,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 14:40:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-05-02 14:40:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 14:40:04,679 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:40:04,679 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:40:04,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 14:40:04,896 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:40:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:40:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash 397552474, now seen corresponding path program 1 times [2021-05-02 14:40:04,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:40:04,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351471352] [2021-05-02 14:40:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:40:04,907 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:40:04,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564765952] [2021-05-02 14:40:04,907 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 14:40:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:04,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 14:40:04,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:40:04,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 14:40:05,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:40:05,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351471352] [2021-05-02 14:40:05,185 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:40:05,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564765952] [2021-05-02 14:40:05,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564765952] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:40:05,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:40:05,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:40:05,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897741985] [2021-05-02 14:40:05,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:40:05,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:40:05,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:40:05,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:40:05,188 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 14:40:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:40:05,387 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-05-02 14:40:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 14:40:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-05-02 14:40:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:40:05,389 INFO L225 Difference]: With dead ends: 57 [2021-05-02 14:40:05,389 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 14:40:05,389 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:40:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 14:40:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-05-02 14:40:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 14:40:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-05-02 14:40:05,395 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 37 [2021-05-02 14:40:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:40:05,395 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-05-02 14:40:05,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 14:40:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-05-02 14:40:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 14:40:05,396 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:40:05,396 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 14:40:05,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:40:05,597 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:40:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:40:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash -382866049, now seen corresponding path program 1 times [2021-05-02 14:40:05,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:40:05,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966566183] [2021-05-02 14:40:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:40:05,607 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:40:05,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110199123] [2021-05-02 14:40:05,607 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 14:40:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:05,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 14:40:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:40:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 14:40:05,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:40:05,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966566183] [2021-05-02 14:40:05,756 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:40:05,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110199123] [2021-05-02 14:40:05,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110199123] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:40:05,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:40:05,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:40:05,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653116639] [2021-05-02 14:40:05,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:40:05,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:40:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:40:05,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:40:05,758 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 14:40:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:40:05,782 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2021-05-02 14:40:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:40:05,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2021-05-02 14:40:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:40:05,785 INFO L225 Difference]: With dead ends: 61 [2021-05-02 14:40:05,785 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 14:40:05,785 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:40:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 14:40:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 14:40:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 14:40:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 14:40:05,799 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 43 [2021-05-02 14:40:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:40:05,806 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 14:40:05,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 14:40:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 14:40:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 14:40:05,810 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:40:05,810 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 14:40:06,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:40:06,025 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:40:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:40:06,025 INFO L82 PathProgramCache]: Analyzing trace with hash 866494938, now seen corresponding path program 1 times [2021-05-02 14:40:06,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:40:06,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626023308] [2021-05-02 14:40:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:40:06,044 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:40:06,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904901224] [2021-05-02 14:40:06,045 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 14:40:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:40:06,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 14:40:06,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:40:06,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,615 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 35 [2021-05-02 14:40:06,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:40:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 14:40:06,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:40:06,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626023308] [2021-05-02 14:40:06,813 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:40:06,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904901224] [2021-05-02 14:40:06,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904901224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:40:06,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:40:06,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 14:40:06,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479701910] [2021-05-02 14:40:06,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 14:40:06,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:40:06,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 14:40:06,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:40:06,814 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 14:40:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:40:07,210 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2021-05-02 14:40:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 14:40:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2021-05-02 14:40:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:40:07,211 INFO L225 Difference]: With dead ends: 59 [2021-05-02 14:40:07,211 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 14:40:07,211 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 559.4ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-05-02 14:40:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 14:40:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 14:40:07,212 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 14:40:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 14:40:07,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-05-02 14:40:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:40:07,212 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 14:40:07,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 14:40:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 14:40:07,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 14:40:07,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:40:07,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 14:40:07,779 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-05-02 14:40:08,065 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-05-02 14:40:08,495 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-05-02 14:40:08,521 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 14:40:08,521 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 14:40:08,521 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 14:40:08,521 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:40:08,522 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)|) (= |#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 14:40:08,522 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:40:08,522 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:40:08,522 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 14:40:08,522 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 14:40:08,522 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:40:08,522 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 14:40:08,524 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:40:08,524 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 15 17) the Hoare annotation is: true [2021-05-02 14:40:08,524 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:40:08,524 INFO L198 CegarLoopUtils]: For program point L33(line 33) no Hoare annotation was computed. [2021-05-02 14:40:08,524 INFO L194 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2021-05-02 14:40:08,524 INFO L194 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: (and (<= (mod main_~B~0 4294967296) 1) (<= (mod main_~A~0 4294967296) 1)) [2021-05-02 14:40:08,525 INFO L201 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 25 53) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point L46(lines 46 49) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 25 53) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point L46-2(lines 25 53) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L194 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (let ((.cse10 (mod main_~B~0 4294967296))) (let ((.cse5 (<= (mod main_~A~0 4294967296) 1)) (.cse3 (<= .cse10 1)) (.cse4 (<= 1 .cse10)) (.cse6 (mod main_~r~0 4294967296))) (let ((.cse0 (let ((.cse7 (= main_~q~0 0)) (.cse8 (= main_~A~0 main_~r~0)) (.cse9 (mod main_~b~0 4294967296))) (or (and .cse7 .cse3 .cse4 .cse8 (< (div (+ .cse6 (- 1)) (- 4294967296)) 1) .cse5 (<= 1 .cse9)) (and .cse7 .cse3 .cse4 .cse8 (< .cse6 .cse9) (<= .cse9 1)))))) (or (and (= main_~B~0 main_~b~0) .cse0) (let ((.cse2 (+ main_~b~0 main_~r~0))) (and (< main_~b~0 2147483648) (let ((.cse1 (* main_~b~0 (- 1)))) (< (div (div (+ .cse1 4294967295) 2147483648) (- 2)) (+ (div (+ (* (div (+ main_~b~0 (- 1)) (- 2147483648)) (- 1)) (div (+ (mod .cse2 4294967296) .cse1) 2147483648)) 2) 1))) (< 0 (+ main_~b~0 1)) .cse3 (= .cse2 main_~A~0) .cse4 (= main_~q~0 1) .cse5)) (and (= (mod main_~b~0 2) 0) (<= (mod (div main_~b~0 2) 4294967296) .cse6) .cse0))))) [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point L42-1(lines 41 50) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point L38(line 38) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L194 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (and (<= (mod main_~B~0 4294967296) 1) (<= (mod main_~A~0 4294967296) 1)) [2021-05-02 14:40:08,525 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 25 53) the Hoare annotation is: true [2021-05-02 14:40:08,525 INFO L198 CegarLoopUtils]: For program point L51(line 51) no Hoare annotation was computed. [2021-05-02 14:40:08,525 INFO L194 CegarLoopUtils]: At program point L41-1(lines 41 50) the Hoare annotation is: (let ((.cse9 (mod main_~B~0 4294967296))) (let ((.cse2 (<= 1 .cse9)) (.cse5 (<= (mod main_~A~0 4294967296) 1)) (.cse0 (= main_~q~0 0)) (.cse1 (<= .cse9 1)) (.cse3 (= main_~A~0 main_~r~0)) (.cse4 (mod main_~r~0 4294967296)) (.cse6 (mod main_~b~0 4294967296))) (or (and .cse0 .cse1 .cse2 .cse3 (< (div (+ .cse4 (- 1)) (- 4294967296)) 1) .cse5 (<= 1 .cse6)) (let ((.cse8 (+ main_~b~0 main_~r~0))) (and (< main_~b~0 2147483648) (let ((.cse7 (* main_~b~0 (- 1)))) (< (div (div (+ .cse7 4294967295) 2147483648) (- 2)) (+ (div (+ (* (div (+ main_~b~0 (- 1)) (- 2147483648)) (- 1)) (div (+ (mod .cse8 4294967296) .cse7) 2147483648)) 2) 1))) (< 0 (+ main_~b~0 1)) .cse1 (= .cse8 main_~A~0) .cse2 (= main_~q~0 1) .cse5)) (and .cse0 .cse1 .cse3 (< .cse4 .cse6) (<= .cse6 1))))) [2021-05-02 14:40:08,526 INFO L194 CegarLoopUtils]: At program point L37-2(lines 37 40) the Hoare annotation is: (let ((.cse2 (mod main_~r~0 4294967296))) (let ((.cse0 (let ((.cse8 (mod main_~b~0 4294967296)) (.cse9 (mod main_~B~0 4294967296))) (let ((.cse3 (= main_~q~0 0)) (.cse4 (<= .cse9 1)) (.cse5 (<= 1 .cse9)) (.cse6 (= main_~A~0 main_~r~0)) (.cse7 (<= 1 .cse8))) (or (and .cse3 .cse4 .cse5 .cse6 .cse7 (<= .cse8 1)) (and .cse3 .cse4 .cse5 .cse6 (< (div (+ .cse2 (- 1)) (- 4294967296)) 1) .cse7))))) (.cse1 (<= (mod main_~A~0 4294967296) 1))) (or (and (= main_~B~0 main_~b~0) .cse0 .cse1) (and (= (mod main_~b~0 2) 0) (<= (mod (div main_~b~0 2) 4294967296) .cse2) .cse0 .cse1)))) [2021-05-02 14:40:08,526 INFO L198 CegarLoopUtils]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2021-05-02 14:40:08,526 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2021-05-02 14:40:08,526 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2021-05-02 14:40:08,526 INFO L198 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-05-02 14:40:08,526 INFO L198 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-05-02 14:40:08,526 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-05-02 14:40:08,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 02:40:08 BoogieIcfgContainer [2021-05-02 14:40:08,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 14:40:08,546 INFO L168 Benchmark]: Toolchain (without parser) took 5551.53 ms. Allocated memory was 187.7 MB in the beginning and 225.4 MB in the end (delta: 37.7 MB). Free memory was 153.8 MB in the beginning and 94.4 MB in the end (delta: 59.3 MB). Peak memory consumption was 115.7 MB. Max. memory is 8.0 GB. [2021-05-02 14:40:08,547 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 187.7 MB. Free memory is still 170.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 14:40:08,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.89 ms. Allocated memory is still 187.7 MB. Free memory was 153.6 MB in the beginning and 170.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 14:40:08,547 INFO L168 Benchmark]: Boogie Preprocessor took 27.88 ms. Allocated memory is still 187.7 MB. Free memory was 170.4 MB in the beginning and 168.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 14:40:08,547 INFO L168 Benchmark]: RCFGBuilder took 308.93 ms. Allocated memory is still 187.7 MB. Free memory was 168.8 MB in the beginning and 153.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 14:40:08,547 INFO L168 Benchmark]: TraceAbstraction took 4999.12 ms. Allocated memory was 187.7 MB in the beginning and 225.4 MB in the end (delta: 37.7 MB). Free memory was 152.6 MB in the beginning and 94.4 MB in the end (delta: 58.1 MB). Peak memory consumption was 115.8 MB. Max. memory is 8.0 GB. [2021-05-02 14:40:08,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 187.7 MB. Free memory is still 170.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 210.89 ms. Allocated memory is still 187.7 MB. Free memory was 153.6 MB in the beginning and 170.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.88 ms. Allocated memory is still 187.7 MB. Free memory was 170.4 MB in the beginning and 168.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 308.93 ms. Allocated memory is still 187.7 MB. Free memory was 168.8 MB in the beginning and 153.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4999.12 ms. Allocated memory was 187.7 MB in the beginning and 225.4 MB in the end (delta: 37.7 MB). Free memory was 152.6 MB in the beginning and 94.4 MB in the end (delta: 58.1 MB). Peak memory consumption was 115.8 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, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3831.5ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 11.7ms, AutomataDifference: 967.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1106.5ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 135 SDtfs, 101 SDslu, 422 SDs, 0 SdLazy, 433 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 441.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 828.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 58.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 32 PreInvPairs, 43 NumberOfFragments, 549 HoareAnnotationTreeSize, 32 FomulaSimplifications, 325 FormulaSimplificationTreeSizeReduction, 206.7ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 527 FormulaSimplificationTreeSizeReductionInter, 880.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 34.4ms SsaConstructionTime, 128.4ms SatisfiabilityAnalysisTime, 1498.4ms InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 938 SizeOfPredicates, 13 NumberOfNonLiveVariables, 508 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 102/132 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: 37]: Loop Invariant Derived loop invariant: ((B == b && ((((((q == 0 && B % 4294967296 <= 1) && 1 <= B % 4294967296) && A == r) && 1 <= b % 4294967296) && b % 4294967296 <= 1) || (((((q == 0 && B % 4294967296 <= 1) && 1 <= B % 4294967296) && A == r) && (r % 4294967296 + -1) / -4294967296 < 1) && 1 <= b % 4294967296))) && A % 4294967296 <= 1) || (((b % 2 == 0 && b / 2 % 4294967296 <= r % 4294967296) && ((((((q == 0 && B % 4294967296 <= 1) && 1 <= B % 4294967296) && A == r) && 1 <= b % 4294967296) && b % 4294967296 <= 1) || (((((q == 0 && B % 4294967296 <= 1) && 1 <= B % 4294967296) && A == r) && (r % 4294967296 + -1) / -4294967296 < 1) && 1 <= b % 4294967296))) && A % 4294967296 <= 1) RESULT: Ultimate proved your program to be correct! Received shutdown request...