/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-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:20:47,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:20:47,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:20:47,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:20:47,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:20:47,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:20:47,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:20:47,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:20:47,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:20:47,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:20:47,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:20:47,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:20:47,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:20:47,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:20:47,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:20:47,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:20:47,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:20:47,503 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 00:20:47,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:20:47,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:20:47,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:20:47,542 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:20:47,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:20:47,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:20:47,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:20:47,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:20:47,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:20:47,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:20:47,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:20:47,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:20:47,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:20:47,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:20:47,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:20:47,546 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:20:47,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:20:47,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:20:47,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:47,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:20:47,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:20:47,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:20:47,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:20:48,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:20:48,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:20:48,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:20:48,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:20:48,087 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:20:48,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2021-02-24 00:20:48,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e32647/41c49a6b4554439c9e0a8d73b2461e36/FLAGb6d182289 [2021-02-24 00:20:48,934 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:20:48,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2021-02-24 00:20:48,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e32647/41c49a6b4554439c9e0a8d73b2461e36/FLAGb6d182289 [2021-02-24 00:20:49,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e32647/41c49a6b4554439c9e0a8d73b2461e36 [2021-02-24 00:20:49,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:20:49,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:20:49,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:49,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:20:49,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:20:49,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e41bbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49, skipping insertion in model container [2021-02-24 00:20:49,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:20:49,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:20:49,513 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-lit/cggmp2005.i[895,908] [2021-02-24 00:20:49,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:49,537 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:20:49,553 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-lit/cggmp2005.i[895,908] [2021-02-24 00:20:49,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:49,575 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:20:49,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49 WrapperNode [2021-02-24 00:20:49,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:49,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:20:49,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:20:49,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:20:49,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (1/1) ... [2021-02-24 00:20:49,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:20:49,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:20:49,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:20:49,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:20:49,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (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 00:20:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:20:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:20:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:20:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:20:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:20:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:20:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:20:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:20:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:20:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:20:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:20:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:20:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:20:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:20:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:20:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:20:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:20:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:20:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:20:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:20:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:20:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:20:49,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:20:49,998 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:20:50,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:50 BoogieIcfgContainer [2021-02-24 00:20:50,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:20:50,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:20:50,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:20:50,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:20:50,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:20:49" (1/3) ... [2021-02-24 00:20:50,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c60d9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:50, skipping insertion in model container [2021-02-24 00:20:50,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:49" (2/3) ... [2021-02-24 00:20:50,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c60d9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:50, skipping insertion in model container [2021-02-24 00:20:50,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:50" (3/3) ... [2021-02-24 00:20:50,024 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2021-02-24 00:20:50,051 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:20:50,065 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:20:50,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:20:50,184 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:20:50,185 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:20:50,185 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:20:50,185 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:20:50,186 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:20:50,186 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:20:50,186 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:20:50,186 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:20:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-24 00:20:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-24 00:20:50,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:50,240 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] [2021-02-24 00:20:50,240 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1513373042, now seen corresponding path program 1 times [2021-02-24 00:20:50,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:50,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501048044] [2021-02-24 00:20:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:50,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:50,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:50,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:50,757 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 00:20:50,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501048044] [2021-02-24 00:20:50,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:50,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:20:50,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102520622] [2021-02-24 00:20:50,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:20:50,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:50,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:20:50,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:20:50,790 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2021-02-24 00:20:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:50,875 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-02-24 00:20:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:20:50,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-02-24 00:20:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:50,887 INFO L225 Difference]: With dead ends: 43 [2021-02-24 00:20:50,888 INFO L226 Difference]: Without dead ends: 23 [2021-02-24 00:20:50,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:20:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-02-24 00:20:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-02-24 00:20:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-24 00:20:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-02-24 00:20:50,981 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2021-02-24 00:20:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:50,982 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-02-24 00:20:50,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:20:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-02-24 00:20:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-24 00:20:50,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:50,985 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] [2021-02-24 00:20:50,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:20:50,986 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:50,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1507831916, now seen corresponding path program 1 times [2021-02-24 00:20:50,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:50,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415334860] [2021-02-24 00:20:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,121 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:20:51,123 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:20:51,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,173 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 00:20:51,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415334860] [2021-02-24 00:20:51,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:51,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:20:51,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476944565] [2021-02-24 00:20:51,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:20:51,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:51,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:20:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:20:51,178 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2021-02-24 00:20:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:51,292 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-02-24 00:20:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:20:51,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-02-24 00:20:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:51,295 INFO L225 Difference]: With dead ends: 30 [2021-02-24 00:20:51,295 INFO L226 Difference]: Without dead ends: 25 [2021-02-24 00:20:51,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:20:51,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-24 00:20:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-02-24 00:20:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-02-24 00:20:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-02-24 00:20:51,309 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2021-02-24 00:20:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:51,310 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-02-24 00:20:51,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:20:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-02-24 00:20:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-24 00:20:51,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:51,312 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] [2021-02-24 00:20:51,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:20:51,313 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:51,314 INFO L82 PathProgramCache]: Analyzing trace with hash -37683431, now seen corresponding path program 1 times [2021-02-24 00:20:51,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:51,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221247384] [2021-02-24 00:20:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,365 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:20:51,366 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:20:51,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:51,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221247384] [2021-02-24 00:20:51,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:51,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:20:51,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308350432] [2021-02-24 00:20:51,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:20:51,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:51,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:20:51,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:20:51,464 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2021-02-24 00:20:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:51,663 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-02-24 00:20:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:20:51,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-02-24 00:20:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:51,665 INFO L225 Difference]: With dead ends: 33 [2021-02-24 00:20:51,665 INFO L226 Difference]: Without dead ends: 28 [2021-02-24 00:20:51,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:20:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-24 00:20:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-02-24 00:20:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-24 00:20:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-02-24 00:20:51,678 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2021-02-24 00:20:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:51,679 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-02-24 00:20:51,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:20:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-02-24 00:20:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-24 00:20:51,680 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:51,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:51,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:20:51,681 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash -435972788, now seen corresponding path program 2 times [2021-02-24 00:20:51,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:51,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045725733] [2021-02-24 00:20:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,733 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:20:51,734 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:20:51,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:51,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:51,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045725733] [2021-02-24 00:20:51,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:51,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:20:51,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111844992] [2021-02-24 00:20:51,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:20:51,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:51,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:20:51,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:20:51,820 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2021-02-24 00:20:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:52,069 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-02-24 00:20:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:20:52,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-02-24 00:20:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:52,071 INFO L225 Difference]: With dead ends: 36 [2021-02-24 00:20:52,071 INFO L226 Difference]: Without dead ends: 31 [2021-02-24 00:20:52,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:20:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-24 00:20:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-02-24 00:20:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-24 00:20:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-02-24 00:20:52,083 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2021-02-24 00:20:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:52,084 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-02-24 00:20:52,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:20:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-02-24 00:20:52,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-24 00:20:52,085 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:52,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:52,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:20:52,086 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1120431673, now seen corresponding path program 3 times [2021-02-24 00:20:52,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:52,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502085892] [2021-02-24 00:20:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:52,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,147 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:20:52,152 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:20:52,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:52,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:52,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:52,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502085892] [2021-02-24 00:20:52,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:52,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:20:52,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24692476] [2021-02-24 00:20:52,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:20:52,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:52,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:20:52,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:20:52,288 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2021-02-24 00:20:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:52,622 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-02-24 00:20:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:20:52,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2021-02-24 00:20:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:52,626 INFO L225 Difference]: With dead ends: 38 [2021-02-24 00:20:52,626 INFO L226 Difference]: Without dead ends: 33 [2021-02-24 00:20:52,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:20:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-24 00:20:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-24 00:20:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-24 00:20:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-02-24 00:20:52,654 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2021-02-24 00:20:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:52,654 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-02-24 00:20:52,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:20:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-02-24 00:20:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-24 00:20:52,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:52,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:52,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:20:52,658 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash -501198292, now seen corresponding path program 4 times [2021-02-24 00:20:52,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:52,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46426556] [2021-02-24 00:20:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:52,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:20:52,777 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:20:52,778 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:20:52,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,892 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-24 00:20:52,893 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-24 00:20:52,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:52,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:52,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:52,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:52,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46426556] [2021-02-24 00:20:52,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:52,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:20:52,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552703512] [2021-02-24 00:20:52,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:20:52,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:20:52,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:20:52,981 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 15 states. [2021-02-24 00:20:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:53,429 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-02-24 00:20:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:20:53,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2021-02-24 00:20:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:53,430 INFO L225 Difference]: With dead ends: 39 [2021-02-24 00:20:53,430 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:20:53,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:20:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:20:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:20:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:20:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:20:53,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-02-24 00:20:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:53,432 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:20:53,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:20:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:20:53,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:20:53,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:20:53,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:20:53,911 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:20:54,023 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-02-24 00:20:54,031 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:20:54,031 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:20:54,031 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:20:54,031 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:20:54,031 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:20:54,032 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,033 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,035 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:20:54,035 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:20:54,035 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:20:54,036 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:20:54,036 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:20:54,036 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:20:54,039 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,040 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,040 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,040 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,040 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:20:54,040 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:20:54,040 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:20:54,041 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:54,041 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:54,041 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:54,041 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-24 00:20:54,041 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= 7 main_~i~0))) (or (and (<= main_~j~0 8) .cse0 (<= (+ main_~i~0 1) main_~j~0)) (and (<= main_~j~0 7) (<= 7 main_~j~0) .cse0) (and (<= (+ main_~i~0 7) main_~j~0) (<= main_~j~0 10) (<= 3 main_~i~0)) (and (<= 5 main_~i~0) (<= (+ main_~i~0 4) main_~j~0) (<= main_~j~0 9)))) [2021-02-24 00:20:54,041 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 34) the Hoare annotation is: true [2021-02-24 00:20:54,042 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (or (and (<= main_~j~0 8) (<= 5 main_~i~0) (<= (+ main_~i~0 3) main_~j~0)) (and (<= (+ main_~i~0 6) main_~j~0) (<= 3 main_~i~0) (<= main_~j~0 9)) (and (<= main_~j~0 7) (<= 7 main_~i~0) (<= main_~i~0 main_~j~0)) (and (<= 10 main_~j~0) (= main_~i~0 1) (<= main_~j~0 10))) [2021-02-24 00:20:54,042 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 1) [2021-02-24 00:20:54,042 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 00:20:54,042 INFO L185 CegarLoopUtils]: At program point L28-2(lines 28 31) the Hoare annotation is: (let ((.cse0 (<= 7 main_~i~0))) (or (and (<= main_~j~0 8) (<= 5 main_~i~0) (<= (+ main_~i~0 3) main_~j~0)) (and (<= (+ main_~i~0 6) main_~j~0) (<= 3 main_~i~0) (<= main_~j~0 9)) (and .cse0 (<= main_~j~0 6) (< 5 main_~j~0)) (and (<= main_~j~0 7) .cse0 (<= main_~i~0 main_~j~0)) (and (<= 10 main_~j~0) (= main_~i~0 1) (<= main_~j~0 10)))) [2021-02-24 00:20:54,042 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 00:20:54,043 INFO L185 CegarLoopUtils]: At program point L28-3(lines 28 31) the Hoare annotation is: (and (<= 7 main_~i~0) (<= main_~j~0 6) (< 5 main_~j~0)) [2021-02-24 00:20:54,043 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 34) the Hoare annotation is: true [2021-02-24 00:20:54,043 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 34) the Hoare annotation is: true [2021-02-24 00:20:54,044 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-24 00:20:54,044 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:20:54,044 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-24 00:20:54,044 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:54,044 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:54,044 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 00:20:54,045 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:54,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:20:54 BoogieIcfgContainer [2021-02-24 00:20:54,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:20:54,081 INFO L168 Benchmark]: Toolchain (without parser) took 4808.18 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.0 MB in the beginning and 122.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:54,082 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:20:54,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.09 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 118.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:54,085 INFO L168 Benchmark]: Boogie Preprocessor took 40.82 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:54,090 INFO L168 Benchmark]: RCFGBuilder took 381.75 ms. Allocated memory is still 153.1 MB. Free memory was 116.9 MB in the beginning and 102.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:54,095 INFO L168 Benchmark]: TraceAbstraction took 4073.91 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 102.4 MB in the beginning and 122.7 MB in the end (delta: -20.3 MB). Peak memory consumption was 75.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:54,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.09 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 118.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.82 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 381.75 ms. Allocated memory is still 153.1 MB. Free memory was 116.9 MB in the beginning and 102.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4073.91 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 102.4 MB in the beginning and 122.7 MB in the end (delta: -20.3 MB). Peak memory consumption was 75.6 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: 28]: Loop Invariant Derived loop invariant: (((((j <= 8 && 5 <= i) && i + 3 <= j) || ((i + 6 <= j && 3 <= i) && j <= 9)) || ((7 <= i && j <= 6) && 5 < j)) || ((j <= 7 && 7 <= i) && i <= j)) || ((10 <= j && i == 1) && j <= 10) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 110 SDslu, 246 SDs, 0 SdLazy, 300 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 73 PreInvPairs, 104 NumberOfFragments, 223 HoareAnnotationTreeSize, 73 FomulaSimplifications, 1019 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 31 FomulaSimplificationsInter, 637 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 12602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 7/40 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...