/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:20:29,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:20:29,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:20:29,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:20:29,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:20:29,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:20:29,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:20:29,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:20:29,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:20:29,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:20:29,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:20:29,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:20:29,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:20:29,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:20:29,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:20:29,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:20:29,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:20:29,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:20:29,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:20:29,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:20:29,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:20:29,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:20:29,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:20:29,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:20:29,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:20:29,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:20:29,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:20:29,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:20:29,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:20:29,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:20:29,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:20:29,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:20:29,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:20:29,680 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:20:29,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:20:29,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:20:29,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:29,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:20:29,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:20:29,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:20:29,681 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:20:30,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:20:30,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:20:30,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:20:30,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:20:30,176 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:20:30,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2021-02-24 00:20:30,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8988b71c2/17f9333c10354b8d8efb0bc2de5feeb1/FLAGac7be4f1e [2021-02-24 00:20:30,832 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:20:30,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2021-02-24 00:20:30,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8988b71c2/17f9333c10354b8d8efb0bc2de5feeb1/FLAGac7be4f1e [2021-02-24 00:20:31,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8988b71c2/17f9333c10354b8d8efb0bc2de5feeb1 [2021-02-24 00:20:31,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:20:31,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:20:31,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:31,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:20:31,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:20:31,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e036cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31, skipping insertion in model container [2021-02-24 00:20:31,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:20:31,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:20:31,449 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i[893,906] [2021-02-24 00:20:31,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:31,476 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:20:31,489 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i[893,906] [2021-02-24 00:20:31,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:31,514 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:20:31,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31 WrapperNode [2021-02-24 00:20:31,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:31,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:20:31,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:20:31,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:20:31,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (1/1) ... [2021-02-24 00:20:31,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:20:31,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:20:31,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:20:31,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:20:31,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (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 [2021-02-24 00:20:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:20:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:20:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:20:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:20:31,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:20:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:20:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:20:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:20:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:20:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:20:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:20:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:20:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:20:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:20:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:20:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:20:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:20:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:20:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:20:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:20:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:20:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:20:32,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:20:32,044 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:20:32,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:32 BoogieIcfgContainer [2021-02-24 00:20:32,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:20:32,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:20:32,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:20:32,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:20:32,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:20:31" (1/3) ... [2021-02-24 00:20:32,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8c90ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:32, skipping insertion in model container [2021-02-24 00:20:32,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:31" (2/3) ... [2021-02-24 00:20:32,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8c90ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:32, skipping insertion in model container [2021-02-24 00:20:32,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:32" (3/3) ... [2021-02-24 00:20:32,071 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2021-02-24 00:20:32,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:20:32,102 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:20:32,129 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:20:32,157 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:20:32,158 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:20:32,158 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:20:32,158 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:20:32,158 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:20:32,158 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:20:32,158 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:20:32,159 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:20:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2021-02-24 00:20:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 00:20:32,189 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:32,190 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:32,190 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:32,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash 674709827, now seen corresponding path program 1 times [2021-02-24 00:20:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:32,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419630262] [2021-02-24 00:20:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:32,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:32,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:32,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:32,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:20:32,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:32,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:32,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:32,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:32,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:32,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419630262] [2021-02-24 00:20:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:32,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 00:20:32,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836144012] [2021-02-24 00:20:32,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:20:32,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:20:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:20:32,679 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 8 states. [2021-02-24 00:20:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:33,429 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2021-02-24 00:20:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:20:33,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2021-02-24 00:20:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:33,442 INFO L225 Difference]: With dead ends: 120 [2021-02-24 00:20:33,442 INFO L226 Difference]: Without dead ends: 82 [2021-02-24 00:20:33,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:20:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-24 00:20:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2021-02-24 00:20:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-24 00:20:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-02-24 00:20:33,509 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 41 [2021-02-24 00:20:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:33,510 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-02-24 00:20:33,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:20:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-02-24 00:20:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:20:33,512 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:33,513 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:33,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:20:33,513 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:33,514 INFO L82 PathProgramCache]: Analyzing trace with hash 231113735, now seen corresponding path program 1 times [2021-02-24 00:20:33,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:33,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842950091] [2021-02-24 00:20:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:33,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:33,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:33,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:33,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:33,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:33,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:33,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:33,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:33,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:33,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:33,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:33,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:33,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:33,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842950091] [2021-02-24 00:20:33,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:33,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:20:33,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101934750] [2021-02-24 00:20:33,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:20:33,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:33,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:20:33,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:20:33,747 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 11 states. [2021-02-24 00:20:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:34,404 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-24 00:20:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 00:20:34,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2021-02-24 00:20:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:34,409 INFO L225 Difference]: With dead ends: 93 [2021-02-24 00:20:34,409 INFO L226 Difference]: Without dead ends: 91 [2021-02-24 00:20:34,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:20:34,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-24 00:20:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-02-24 00:20:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 00:20:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-24 00:20:34,437 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 47 [2021-02-24 00:20:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:34,438 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-24 00:20:34,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:20:34,438 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-24 00:20:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:20:34,440 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:34,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-02-24 00:20:34,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:20:34,441 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:34,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:34,442 INFO L82 PathProgramCache]: Analyzing trace with hash -848378054, now seen corresponding path program 1 times [2021-02-24 00:20:34,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:34,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477620235] [2021-02-24 00:20:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:34,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:34,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:34,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:34,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:34,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:34,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 00:20:34,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477620235] [2021-02-24 00:20:34,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:34,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:20:34,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638806463] [2021-02-24 00:20:34,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:20:34,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:34,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:20:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:20:34,561 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-24 00:20:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:34,869 INFO L93 Difference]: Finished difference Result 146 states and 168 transitions. [2021-02-24 00:20:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:20:34,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-24 00:20:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:34,872 INFO L225 Difference]: With dead ends: 146 [2021-02-24 00:20:34,872 INFO L226 Difference]: Without dead ends: 98 [2021-02-24 00:20:34,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:20:34,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-24 00:20:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2021-02-24 00:20:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-24 00:20:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-24 00:20:34,898 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 53 [2021-02-24 00:20:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:34,899 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-24 00:20:34,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:20:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-24 00:20:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 00:20:34,901 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:34,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:34,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:20:34,902 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:34,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:34,903 INFO L82 PathProgramCache]: Analyzing trace with hash -108597218, now seen corresponding path program 1 times [2021-02-24 00:20:34,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:34,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013041539] [2021-02-24 00:20:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:34,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:34,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:34,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:34,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:34,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:34,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:35,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:35,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:35,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:35,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-24 00:20:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:35,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:20:35,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013041539] [2021-02-24 00:20:35,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:35,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:20:35,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28272208] [2021-02-24 00:20:35,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:20:35,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:35,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:20:35,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:20:35,087 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 9 states. [2021-02-24 00:20:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:35,649 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2021-02-24 00:20:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:20:35,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2021-02-24 00:20:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:35,651 INFO L225 Difference]: With dead ends: 138 [2021-02-24 00:20:35,652 INFO L226 Difference]: Without dead ends: 87 [2021-02-24 00:20:35,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:20:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-24 00:20:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-02-24 00:20:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-24 00:20:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2021-02-24 00:20:35,674 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 62 [2021-02-24 00:20:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:35,675 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2021-02-24 00:20:35,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:20:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2021-02-24 00:20:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-24 00:20:35,676 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:35,676 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:35,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:20:35,677 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:35,678 INFO L82 PathProgramCache]: Analyzing trace with hash -338178086, now seen corresponding path program 2 times [2021-02-24 00:20:35,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:35,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085029971] [2021-02-24 00:20:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:35,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:35,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:35,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:35,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:35,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:35,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:35,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:35,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-24 00:20:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:35,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:35,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 00:20:35,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085029971] [2021-02-24 00:20:35,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:35,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:20:35,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580394700] [2021-02-24 00:20:35,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:20:35,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:35,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:20:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:20:35,884 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 9 states. [2021-02-24 00:20:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:36,369 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2021-02-24 00:20:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:20:36,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2021-02-24 00:20:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:36,376 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:20:36,376 INFO L226 Difference]: Without dead ends: 110 [2021-02-24 00:20:36,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:20:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-24 00:20:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2021-02-24 00:20:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-24 00:20:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-02-24 00:20:36,417 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 68 [2021-02-24 00:20:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:36,417 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-02-24 00:20:36,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:20:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-02-24 00:20:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-24 00:20:36,419 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:36,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:36,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:20:36,420 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:36,421 INFO L82 PathProgramCache]: Analyzing trace with hash -678200968, now seen corresponding path program 3 times [2021-02-24 00:20:36,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:36,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945949165] [2021-02-24 00:20:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:36,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:36,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:36,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:36,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:36,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:36,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:36,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:36,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:36,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:36,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:36,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-24 00:20:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:36,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:36,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:20:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:36,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:36,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-02-24 00:20:36,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945949165] [2021-02-24 00:20:36,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:36,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:20:36,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040589584] [2021-02-24 00:20:36,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:20:36,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:36,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:20:36,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:20:36,630 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 11 states. [2021-02-24 00:20:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:37,325 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2021-02-24 00:20:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:20:37,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2021-02-24 00:20:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:37,327 INFO L225 Difference]: With dead ends: 142 [2021-02-24 00:20:37,327 INFO L226 Difference]: Without dead ends: 140 [2021-02-24 00:20:37,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:20:37,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-02-24 00:20:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2021-02-24 00:20:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-02-24 00:20:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2021-02-24 00:20:37,356 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 77 [2021-02-24 00:20:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:37,356 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2021-02-24 00:20:37,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:20:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2021-02-24 00:20:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-24 00:20:37,358 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:37,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:37,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:20:37,359 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:37,360 INFO L82 PathProgramCache]: Analyzing trace with hash 792314266, now seen corresponding path program 4 times [2021-02-24 00:20:37,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:37,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883676551] [2021-02-24 00:20:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:37,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:37,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:37,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:37,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:37,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:37,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:37,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:37,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:37,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:37,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:37,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:37,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:37,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-24 00:20:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:37,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:20:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:37,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-24 00:20:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:37,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:37,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-24 00:20:37,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883676551] [2021-02-24 00:20:37,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:37,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:20:37,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312281070] [2021-02-24 00:20:37,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:20:37,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:20:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:20:37,611 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand 13 states. [2021-02-24 00:20:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:38,448 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2021-02-24 00:20:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:20:38,449 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2021-02-24 00:20:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:38,451 INFO L225 Difference]: With dead ends: 172 [2021-02-24 00:20:38,451 INFO L226 Difference]: Without dead ends: 170 [2021-02-24 00:20:38,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:20:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-24 00:20:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 109. [2021-02-24 00:20:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-24 00:20:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-02-24 00:20:38,480 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 86 [2021-02-24 00:20:38,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:38,480 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-02-24 00:20:38,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:20:38,481 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-02-24 00:20:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-24 00:20:38,482 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:38,482 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:38,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:20:38,483 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:38,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:38,484 INFO L82 PathProgramCache]: Analyzing trace with hash 736460728, now seen corresponding path program 5 times [2021-02-24 00:20:38,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:38,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252148891] [2021-02-24 00:20:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:38,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:38,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:38,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:38,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:38,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:38,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:38,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:38,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:38,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:38,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:38,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:38,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:38,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:38,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:38,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:38,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-24 00:20:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:38,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:20:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:38,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-24 00:20:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:38,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-24 00:20:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:38,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:38,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-02-24 00:20:38,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252148891] [2021-02-24 00:20:38,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:38,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-24 00:20:38,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302121603] [2021-02-24 00:20:38,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:20:38,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:38,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:20:38,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:20:38,820 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 17 states. [2021-02-24 00:20:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:40,773 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-02-24 00:20:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-24 00:20:40,774 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2021-02-24 00:20:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:40,776 INFO L225 Difference]: With dead ends: 159 [2021-02-24 00:20:40,776 INFO L226 Difference]: Without dead ends: 157 [2021-02-24 00:20:40,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2021-02-24 00:20:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-24 00:20:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 130. [2021-02-24 00:20:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-02-24 00:20:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2021-02-24 00:20:40,808 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 95 [2021-02-24 00:20:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:40,808 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2021-02-24 00:20:40,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:20:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2021-02-24 00:20:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-24 00:20:40,810 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:40,810 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:40,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:20:40,811 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -92657401, now seen corresponding path program 6 times [2021-02-24 00:20:40,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:40,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743446386] [2021-02-24 00:20:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:40,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:40,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:40,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:40,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-24 00:20:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:20:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:20:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:20:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-24 00:20:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:40,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:40,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-02-24 00:20:40,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743446386] [2021-02-24 00:20:40,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:40,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:20:40,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056628503] [2021-02-24 00:20:40,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:20:40,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:20:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:20:40,943 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 7 states. [2021-02-24 00:20:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:41,323 INFO L93 Difference]: Finished difference Result 210 states and 239 transitions. [2021-02-24 00:20:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:20:41,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2021-02-24 00:20:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:41,325 INFO L225 Difference]: With dead ends: 210 [2021-02-24 00:20:41,325 INFO L226 Difference]: Without dead ends: 132 [2021-02-24 00:20:41,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:20:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-24 00:20:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-02-24 00:20:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-02-24 00:20:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-02-24 00:20:41,354 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 110 [2021-02-24 00:20:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:41,354 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-02-24 00:20:41,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:20:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-02-24 00:20:41,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-24 00:20:41,356 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:41,356 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:41,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:20:41,357 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:41,357 INFO L82 PathProgramCache]: Analyzing trace with hash -552364528, now seen corresponding path program 7 times [2021-02-24 00:20:41,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:41,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609507344] [2021-02-24 00:20:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:41,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:41,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:41,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:20:41,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:41,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:41,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-24 00:20:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:20:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:20:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 00:20:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-02-24 00:20:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-02-24 00:20:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:41,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:41,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 69 proven. 47 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-02-24 00:20:41,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609507344] [2021-02-24 00:20:41,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:41,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:20:41,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045858009] [2021-02-24 00:20:41,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:20:41,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:20:41,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:20:41,529 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 8 states. [2021-02-24 00:20:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:41,843 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-02-24 00:20:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:20:41,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2021-02-24 00:20:41,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:41,845 INFO L225 Difference]: With dead ends: 130 [2021-02-24 00:20:41,845 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:20:41,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:20:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:20:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:20:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:20:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:20:41,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2021-02-24 00:20:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:41,847 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:20:41,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:20:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:20:41,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:20:41,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:20:41,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:20:42,306 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2021-02-24 00:20:42,444 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2021-02-24 00:20:43,218 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 12 [2021-02-24 00:20:43,515 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:20:43,516 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:20:43,516 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:20:43,516 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:20:43,516 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:20:43,516 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,516 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,517 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,517 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:20:43,517 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:20:43,517 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:20:43,517 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#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)|)) [2021-02-24 00:20:43,517 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:20:43,517 INFO L192 CegarLoopUtils]: At program point L12-4(line 12) the Hoare annotation is: true [2021-02-24 00:20:43,518 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,518 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,518 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,518 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,518 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:20:43,518 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:20:43,518 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:20:43,518 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:43,519 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:43,519 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:43,519 INFO L185 CegarLoopUtils]: At program point L35-3(lines 35 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,519 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-24 00:20:43,519 INFO L185 CegarLoopUtils]: At program point L35-4(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,519 INFO L192 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: true [2021-02-24 00:20:43,520 INFO L185 CegarLoopUtils]: At program point L35-5(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,520 INFO L185 CegarLoopUtils]: At program point L35-6(lines 35 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,520 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 00:20:43,520 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-24 00:20:43,520 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-24 00:20:43,520 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 25 40) the Hoare annotation is: true [2021-02-24 00:20:43,521 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,521 INFO L185 CegarLoopUtils]: At program point L36-3(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,521 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-24 00:20:43,521 INFO L185 CegarLoopUtils]: At program point L36-4(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,521 INFO L192 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: true [2021-02-24 00:20:43,521 INFO L185 CegarLoopUtils]: At program point L36-5(lines 36 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,522 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 00:20:43,522 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 00:20:43,522 INFO L192 CegarLoopUtils]: At program point L28-2(line 28) the Hoare annotation is: true [2021-02-24 00:20:43,522 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,522 INFO L185 CegarLoopUtils]: At program point L37-1(lines 36 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,522 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-24 00:20:43,522 INFO L192 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: true [2021-02-24 00:20:43,523 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-24 00:20:43,523 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-24 00:20:43,523 INFO L192 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: true [2021-02-24 00:20:43,523 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 25 40) the Hoare annotation is: true [2021-02-24 00:20:43,523 INFO L192 CegarLoopUtils]: At program point L38(lines 25 40) the Hoare annotation is: true [2021-02-24 00:20:43,523 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (* 3 main_~i~0) main_~j~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,524 INFO L185 CegarLoopUtils]: At program point L34-3(line 34) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (* 3 main_~i~0) main_~j~0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ |main_#t~post6| 2) (* 2 main_~n~0))) [2021-02-24 00:20:43,524 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-24 00:20:43,524 INFO L185 CegarLoopUtils]: At program point L34-4(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) .cse0) (<= (+ |main_#t~post6| 2) .cse0))) [2021-02-24 00:20:43,524 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 25 40) the Hoare annotation is: true [2021-02-24 00:20:43,524 INFO L192 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: true [2021-02-24 00:20:43,524 INFO L185 CegarLoopUtils]: At program point L34-5(lines 34 37) the Hoare annotation is: (or (= main_~i~0 0) (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) (* 2 main_~n~0)))) [2021-02-24 00:20:43,524 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 00:20:43,525 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-24 00:20:43,525 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-24 00:20:43,525 INFO L192 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: true [2021-02-24 00:20:43,525 INFO L192 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: true [2021-02-24 00:20:43,525 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-24 00:20:43,525 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:43,526 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:20:43,526 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:43,526 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:43,526 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:43,526 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:43,526 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:43,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:20:43 BoogieIcfgContainer [2021-02-24 00:20:43,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:20:43,550 INFO L168 Benchmark]: Toolchain (without parser) took 12340.62 ms. Allocated memory was 162.5 MB in the beginning and 338.7 MB in the end (delta: 176.2 MB). Free memory was 118.8 MB in the beginning and 185.3 MB in the end (delta: -66.5 MB). Peak memory consumption was 138.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:43,551 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 162.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:20:43,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.98 ms. Allocated memory is still 162.5 MB. Free memory was 117.6 MB in the beginning and 143.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:43,552 INFO L168 Benchmark]: Boogie Preprocessor took 39.83 ms. Allocated memory is still 162.5 MB. Free memory was 143.6 MB in the beginning and 142.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:43,552 INFO L168 Benchmark]: RCFGBuilder took 490.84 ms. Allocated memory is still 162.5 MB. Free memory was 141.9 MB in the beginning and 128.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:43,553 INFO L168 Benchmark]: TraceAbstraction took 11497.19 ms. Allocated memory was 162.5 MB in the beginning and 338.7 MB in the end (delta: 176.2 MB). Free memory was 127.7 MB in the beginning and 185.3 MB in the end (delta: -57.6 MB). Peak memory consumption was 147.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:43,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 162.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.98 ms. Allocated memory is still 162.5 MB. Free memory was 117.6 MB in the beginning and 143.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.83 ms. Allocated memory is still 162.5 MB. Free memory was 143.6 MB in the beginning and 142.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 490.84 ms. Allocated memory is still 162.5 MB. Free memory was 141.9 MB in the beginning and 128.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11497.19 ms. Allocated memory was 162.5 MB in the beginning and 338.7 MB in the end (delta: 176.2 MB). Free memory was 127.7 MB in the beginning and 185.3 MB in the end (delta: -57.6 MB). Peak memory consumption was 147.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 <= n && i + 1 <= n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: i == 0 || (1 <= n && i + 1 <= 2 * n) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 <= n && j + 1 <= 3 * i) && i + 1 <= n - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 463 SDtfs, 1092 SDslu, 813 SDs, 0 SdLazy, 2994 SolverSat, 186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 183 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 62 LocationsWithAnnotation, 237 PreInvPairs, 335 NumberOfFragments, 339 HoareAnnotationTreeSize, 237 FomulaSimplifications, 1347836 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 62 FomulaSimplificationsInter, 7879 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 764 NumberOfCodeBlocks, 764 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 754 ConstructedInterpolants, 0 QuantifiedInterpolants, 186034 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 430/600 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...