/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 07:19:53,604 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 07:19:53,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 07:19:53,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 07:19:53,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 07:19:53,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-05-01 07:19:53,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 07:19:53,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 07:19:53,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 07:19:53,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 07:19:53,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 07:19:53,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 07:19:53,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 07:19:53,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-05-01 07:19:53,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2021-05-01 07:19:53,742 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 07:19:53,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 07:19:53,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 07:19:53,746 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 07:19:53,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 07:19:53,747 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 07:19:53,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 07:19:53,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 07:19:53,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 07:19:53,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 07:19:53,752 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 07:19:53,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 07:19:53,753 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 07:19:53,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 07:19:53,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 07:19:53,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 07:19:53,753 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 07:19:53,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 07:19:53,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 07:19:53,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 07:19:53,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 07:19:53,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 07:19:53,754 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 07:19:53,754 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 07:19:54,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 07:19:54,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 07:19:54,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 07:19:54,126 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 07:19:54,128 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 07:19:54,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i
[2021-05-01 07:19:54,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240fbeea2/12a5a17c9f644651914f5be1e09e96d2/FLAG9a8bb7925
[2021-05-01 07:19:54,723 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 07:19:54,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i
[2021-05-01 07:19:54,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240fbeea2/12a5a17c9f644651914f5be1e09e96d2/FLAG9a8bb7925
[2021-05-01 07:19:55,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240fbeea2/12a5a17c9f644651914f5be1e09e96d2
[2021-05-01 07:19:55,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 07:19:55,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 07:19:55,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 07:19:55,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 07:19:55,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 07:19:55,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0b5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55, skipping insertion in model container
[2021-05-01 07:19:55,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 07:19:55,242 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 07:19:55,356 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i[895,908]
[2021-05-01 07:19:55,378 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 07:19:55,386 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 07:19:55,401 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i[895,908]
[2021-05-01 07:19:55,407 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 07:19:55,424 INFO L208 MainTranslator]: Completed translation
[2021-05-01 07:19:55,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55 WrapperNode
[2021-05-01 07:19:55,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 07:19:55,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 07:19:55,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 07:19:55,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 07:19:55,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
[2021-05-01 07:19:55,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 07:19:55,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 07:19:55,499 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 07:19:55,499 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 07:19:55,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 07:19:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 07:19:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 07:19:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 07:19:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 07:19:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 07:19:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 07:19:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 07:19:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 07:19:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-05-01 07:19:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-05-01 07:19:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 07:19:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 07:19:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 07:19:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 07:19:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 07:19:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 07:19:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 07:19:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 07:19:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 07:19:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 07:19:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 07:19:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 07:19:55,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 07:19:55,881 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 07:19:55,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:19:55 BoogieIcfgContainer
[2021-05-01 07:19:55,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 07:19:55,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 07:19:55,884 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 07:19:55,886 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 07:19:55,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:19:55" (1/3) ...
[2021-05-01 07:19:55,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764a47a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:19:55, skipping insertion in model container
[2021-05-01 07:19:55,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:19:55" (2/3) ...
[2021-05-01 07:19:55,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764a47a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:19:55, skipping insertion in model container
[2021-05-01 07:19:55,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:19:55" (3/3) ...
[2021-05-01 07:19:55,889 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i
[2021-05-01 07:19:55,894 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 07:19:55,898 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 07:19:55,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 07:19:55,965 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 07:19:55,965 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 07:19:55,965 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 07:19:55,965 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 07:19:55,965 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 07:19:55,966 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 07:19:55,966 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 07:19:55,966 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 07:19:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-05-01 07:19:55,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-05-01 07:19:56,000 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:19:56,001 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:19:56,001 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:19:56,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:19:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash -915508507, now seen corresponding path program 1 times
[2021-05-01 07:19:56,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:19:56,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000949741]
[2021-05-01 07:19:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:19:56,080 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 07:19:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:56,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:56,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:19:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:56,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:19:56,298 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:19:56,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000949741]
[2021-05-01 07:19:56,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2000949741] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:19:56,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:19:56,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 07:19:56,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104467174]
[2021-05-01 07:19:56,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 07:19:56,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:19:56,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 07:19:56,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 07:19:56,322 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:19:56,432 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions.
[2021-05-01 07:19:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 07:19:56,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-05-01 07:19:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:19:56,442 INFO L225 Difference]: With dead ends: 35
[2021-05-01 07:19:56,442 INFO L226 Difference]: Without dead ends: 17
[2021-05-01 07:19:56,446 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 07:19:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-05-01 07:19:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2021-05-01 07:19:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2021-05-01 07:19:56,492 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11
[2021-05-01 07:19:56,493 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:19:56,493 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2021-05-01 07:19:56,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:56,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2021-05-01 07:19:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-05-01 07:19:56,495 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:19:56,495 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:19:56,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 07:19:56,496 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:19:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:19:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -925667238, now seen corresponding path program 1 times
[2021-05-01 07:19:56,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:19:56,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944656933]
[2021-05-01 07:19:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:19:56,506 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 07:19:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:56,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:56,567 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size
[2021-05-01 07:19:56,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 07:19:56,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:56,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:56,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:19:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:56,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:56,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:19:56,664 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:19:56,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944656933]
[2021-05-01 07:19:56,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1944656933] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:19:56,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:19:56,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 07:19:56,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011372449]
[2021-05-01 07:19:56,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 07:19:56,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:19:56,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 07:19:56,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 07:19:56,667 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:19:56,944 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions.
[2021-05-01 07:19:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 07:19:56,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-05-01 07:19:56,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:19:56,946 INFO L225 Difference]: With dead ends: 28
[2021-05-01 07:19:56,946 INFO L226 Difference]: Without dead ends: 26
[2021-05-01 07:19:56,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 07:19:56,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2021-05-01 07:19:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25.
[2021-05-01 07:19:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 07:19:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions.
[2021-05-01 07:19:56,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11
[2021-05-01 07:19:56,963 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:19:56,963 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions.
[2021-05-01 07:19:56,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions.
[2021-05-01 07:19:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-05-01 07:19:56,964 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:19:56,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:19:56,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 07:19:56,965 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:19:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:19:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1147629988, now seen corresponding path program 1 times
[2021-05-01 07:19:56,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:19:56,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600738114]
[2021-05-01 07:19:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:19:56,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16
[2021-05-01 07:19:57,008 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~x~0_8 v_main_~n~0_8) (<= 0 (+ |v_main_#t~nondet4_7| 2147483648)) (<= |v_main_#t~nondet4_7| 2147483647) (not (= |v_main_#t~nondet4_7| 0))) InVars {main_#t~nondet4=|v_main_#t~nondet4_7|, main_~n~0=v_main_~n~0_8, main_~x~0=v_main_~x~0_8} OutVars{main_#t~nondet4=|v_main_#t~nondet4_7|, main_~n~0=v_main_~n~0_8, main_~x~0=v_main_~x~0_8} AuxVars[] AssignedVars[]
[2021-05-01 07:19:57,032 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 91.5 percent of original size
[2021-05-01 07:19:57,045 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,047 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,064 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,068 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,069 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19
[2021-05-01 07:19:57,077 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size
[2021-05-01 07:19:57,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,081 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29
[2021-05-01 07:19:57,087 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size
[2021-05-01 07:19:57,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,100 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,110 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,113 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,116 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,120 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,134 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,137 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,147 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,150 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,153 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,156 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,167 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,172 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,176 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 91.5 percent of original size 107
[2021-05-01 07:19:57,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79
[2021-05-01 07:19:57,225 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2021-05-01 07:19:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:57,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:57,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 07:19:57,291 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size
[2021-05-01 07:19:57,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:57,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:57,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:57,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:19:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:57,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:19:57,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,384 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 07:19:57,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-05-01 07:19:57,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75
[2021-05-01 07:19:57,505 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.3 percent of original size
[2021-05-01 07:19:57,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43
[2021-05-01 07:19:57,561 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size
[2021-05-01 07:19:57,564 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 07:19:57,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-05-01 07:19:57,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24
[2021-05-01 07:19:57,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 07:19:57,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:57,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:57,620 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:19:57,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600738114]
[2021-05-01 07:19:57,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [600738114] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:19:57,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:19:57,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2021-05-01 07:19:57,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265573769]
[2021-05-01 07:19:57,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-05-01 07:19:57,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:19:57,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-05-01 07:19:57,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-05-01 07:19:57,627 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:19:58,152 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions.
[2021-05-01 07:19:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-05-01 07:19:58,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2021-05-01 07:19:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:19:58,159 INFO L225 Difference]: With dead ends: 46
[2021-05-01 07:19:58,159 INFO L226 Difference]: Without dead ends: 40
[2021-05-01 07:19:58,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 507.8ms TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380
[2021-05-01 07:19:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-05-01 07:19:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30.
[2021-05-01 07:19:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 07:19:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions.
[2021-05-01 07:19:58,178 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14
[2021-05-01 07:19:58,179 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:19:58,179 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions.
[2021-05-01 07:19:58,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions.
[2021-05-01 07:19:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-05-01 07:19:58,180 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:19:58,181 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:19:58,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-05-01 07:19:58,181 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:19:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:19:58,182 INFO L82 PathProgramCache]: Analyzing trace with hash 427578968, now seen corresponding path program 1 times
[2021-05-01 07:19:58,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:19:58,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97499130]
[2021-05-01 07:19:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:19:58,191 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED
[2021-05-01 07:19:58,194 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 07:19:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:58,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:58,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:58,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:58,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:58,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:19:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:58,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:19:58,350 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:19:58,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97499130]
[2021-05-01 07:19:58,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [97499130] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:19:58,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:19:58,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2021-05-01 07:19:58,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064303336]
[2021-05-01 07:19:58,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-05-01 07:19:58,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:19:58,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-05-01 07:19:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2021-05-01 07:19:58,354 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:19:58,618 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions.
[2021-05-01 07:19:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-05-01 07:19:58,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-05-01 07:19:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:19:58,620 INFO L225 Difference]: With dead ends: 46
[2021-05-01 07:19:58,620 INFO L226 Difference]: Without dead ends: 42
[2021-05-01 07:19:58,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 175.7ms TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182
[2021-05-01 07:19:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2021-05-01 07:19:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 23.
[2021-05-01 07:19:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions.
[2021-05-01 07:19:58,628 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17
[2021-05-01 07:19:58,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:19:58,628 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions.
[2021-05-01 07:19:58,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:19:58,629 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions.
[2021-05-01 07:19:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-05-01 07:19:58,629 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:19:58,630 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:19:58,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-05-01 07:19:58,630 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:19:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:19:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1930189671, now seen corresponding path program 1 times
[2021-05-01 07:19:58,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:19:58,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946916609]
[2021-05-01 07:19:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:19:58,636 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size
[2021-05-01 07:19:58,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 07:19:58,638 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet4_17| 0) (< v_main_~x~0_18 v_main_~n~0_12)) InVars {main_#t~nondet4=|v_main_#t~nondet4_17|, main_~n~0=v_main_~n~0_12, main_~x~0=v_main_~x~0_18} OutVars{main_#t~nondet4=|v_main_#t~nondet4_17|, main_~n~0=v_main_~n~0_12, main_~x~0=v_main_~x~0_18} AuxVars[] AssignedVars[]
[2021-05-01 07:19:58,650 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 90.3 percent of original size
[2021-05-01 07:19:58,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,654 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,657 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,661 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10
[2021-05-01 07:19:58,665 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size
[2021-05-01 07:19:58,668 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,669 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 20
[2021-05-01 07:19:58,672 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,676 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,678 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,691 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,693 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size
[2021-05-01 07:19:58,696 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,699 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,701 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,703 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,706 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 90.3 percent of original size 65
[2021-05-01 07:19:58,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43
[2021-05-01 07:19:58,728 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2021-05-01 07:19:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:58,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:58,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:58,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:58,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:19:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:58,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-05-01 07:19:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:58,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:19:58,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,820 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 07:19:58,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:58,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:19:58,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15
[2021-05-01 07:19:58,841 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size
[2021-05-01 07:19:58,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 07:19:58,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 07:19:58,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:58,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:58,870 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:19:58,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946916609]
[2021-05-01 07:19:58,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [946916609] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:19:58,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:19:58,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2021-05-01 07:19:58,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024848604]
[2021-05-01 07:19:58,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-05-01 07:19:58,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:19:58,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-05-01 07:19:58,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-05-01 07:19:58,874 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:19:59,111 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions.
[2021-05-01 07:19:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-05-01 07:19:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19
[2021-05-01 07:19:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:19:59,121 INFO L225 Difference]: With dead ends: 36
[2021-05-01 07:19:59,121 INFO L226 Difference]: Without dead ends: 26
[2021-05-01 07:19:59,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 206.8ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240
[2021-05-01 07:19:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2021-05-01 07:19:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2021-05-01 07:19:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions.
[2021-05-01 07:19:59,135 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 19
[2021-05-01 07:19:59,135 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:19:59,135 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions.
[2021-05-01 07:19:59,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions.
[2021-05-01 07:19:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-05-01 07:19:59,136 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:19:59,137 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:19:59,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-05-01 07:19:59,137 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:19:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:19:59,138 INFO L82 PathProgramCache]: Analyzing trace with hash 729032691, now seen corresponding path program 1 times
[2021-05-01 07:19:59,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:19:59,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082844678]
[2021-05-01 07:19:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:19:59,143 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED
[2021-05-01 07:19:59,145 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 07:19:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:59,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:59,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-05-01 07:19:59,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-05-01 07:19:59,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:59,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:19:59,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:59,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:19:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:59,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-05-01 07:19:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:19:59,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:19:59,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:19:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:19:59,240 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:19:59,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082844678]
[2021-05-01 07:19:59,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1082844678] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:19:59,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:19:59,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 07:19:59,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149379079]
[2021-05-01 07:19:59,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 07:19:59,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:19:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 07:19:59,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-05-01 07:19:59,242 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:19:59,411 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions.
[2021-05-01 07:19:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-05-01 07:19:59,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22
[2021-05-01 07:19:59,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:19:59,412 INFO L225 Difference]: With dead ends: 26
[2021-05-01 07:19:59,412 INFO L226 Difference]: Without dead ends: 0
[2021-05-01 07:19:59,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2021-05-01 07:19:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-05-01 07:19:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-05-01 07:19:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-05-01 07:19:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-05-01 07:19:59,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22
[2021-05-01 07:19:59,414 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:19:59,414 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-05-01 07:19:59,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 07:19:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-05-01 07:19:59,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-05-01 07:19:59,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-05-01 07:19:59,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-05-01 07:20:00,172 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed.
[2021-05-01 07:20:00,172 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed.
[2021-05-01 07:20:00,172 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed.
[2021-05-01 07:20:00,173 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2021-05-01 07:20:00,173 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|))
[2021-05-01 07:20:00,173 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2021-05-01 07:20:00,173 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2021-05-01 07:20:00,173 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-05-01 07:20:00,173 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-05-01 07:20:00,173 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2021-05-01 07:20:00,173 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed.
[2021-05-01 07:20:00,173 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed.
[2021-05-01 07:20:00,174 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed.
[2021-05-01 07:20:00,174 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed.
[2021-05-01 07:20:00,174 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true
[2021-05-01 07:20:00,174 INFO L194 CegarLoopUtils]: At program point L29(lines 29 31) the Hoare annotation is: (or (and (<= 0 main_~m~0) (<= 1 main_~x~0) (<= (+ main_~m~0 1) main_~n~0) (<= (+ main_~x~0 1) main_~n~0)) (and (< main_~x~0 main_~n~0) (= main_~m~0 0) (<= 0 (+ |main_#t~nondet4| 2147483648)) (<= |main_#t~nondet4| 2147483647) (= main_~x~0 0)))
[2021-05-01 07:20:00,174 INFO L194 CegarLoopUtils]: At program point L29-2(lines 29 31) the Hoare annotation is: (and (let ((.cse0 (<= 0 main_~m~0))) (or (and .cse0 (= main_~x~0 0)) (and .cse0 (<= 1 main_~x~0)))) (<= (+ main_~m~0 1) main_~n~0) (<= (+ main_~x~0 1) main_~n~0))
[2021-05-01 07:20:00,174 INFO L194 CegarLoopUtils]: At program point L28-2(lines 28 33) the Hoare annotation is: (or (and (= main_~m~0 0) (= main_~x~0 0)) (and (<= 0 main_~m~0) (<= 1 main_~x~0) (<= (+ main_~m~0 1) main_~n~0)))
[2021-05-01 07:20:00,174 INFO L194 CegarLoopUtils]: At program point L28-3(lines 28 33) the Hoare annotation is: (or (and (= main_~m~0 0) (= main_~x~0 0)) (and (<= 0 main_~m~0) (<= 1 main_~x~0) (<= (+ main_~m~0 1) main_~n~0)))
[2021-05-01 07:20:00,175 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 24 37) the Hoare annotation is: true
[2021-05-01 07:20:00,175 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 24 37) the Hoare annotation is: true
[2021-05-01 07:20:00,175 INFO L201 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true
[2021-05-01 07:20:00,175 INFO L194 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (or (and (<= 1 main_~x~0) (<= (+ main_~m~0 1) main_~n~0)) (and (= main_~m~0 0) (= main_~x~0 0)))
[2021-05-01 07:20:00,175 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-05-01 07:20:00,175 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true
[2021-05-01 07:20:00,175 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-05-01 07:20:00,175 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-05-01 07:20:00,175 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-05-01 07:20:00,176 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-05-01 07:20:00,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:20:00 BoogieIcfgContainer
[2021-05-01 07:20:00,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 07:20:00,202 INFO L168 Benchmark]: Toolchain (without parser) took 4987.19 ms. Allocated memory was 186.6 MB in the beginning and 227.5 MB in the end (delta: 40.9 MB). Free memory was 152.1 MB in the beginning and 162.6 MB in the end (delta: -10.4 MB). Peak memory consumption was 115.2 MB. Max. memory is 8.0 GB.
[2021-05-01 07:20:00,203 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 186.6 MB. Free memory is still 168.8 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 07:20:00,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.79 ms. Allocated memory is still 186.6 MB. Free memory was 151.9 MB in the beginning and 142.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-05-01 07:20:00,205 INFO L168 Benchmark]: Boogie Preprocessor took 69.18 ms. Allocated memory is still 186.6 MB. Free memory was 142.3 MB in the beginning and 169.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB.
[2021-05-01 07:20:00,206 INFO L168 Benchmark]: RCFGBuilder took 383.52 ms. Allocated memory is still 186.6 MB. Free memory was 169.8 MB in the beginning and 156.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
[2021-05-01 07:20:00,206 INFO L168 Benchmark]: TraceAbstraction took 4314.58 ms. Allocated memory was 186.6 MB in the beginning and 227.5 MB in the end (delta: 40.9 MB). Free memory was 155.9 MB in the beginning and 162.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 8.0 GB.
[2021-05-01 07:20:00,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 186.6 MB. Free memory is still 168.8 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 208.79 ms. Allocated memory is still 186.6 MB. Free memory was 151.9 MB in the beginning and 142.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 69.18 ms. Allocated memory is still 186.6 MB. Free memory was 142.3 MB in the beginning and 169.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 383.52 ms. Allocated memory is still 186.6 MB. Free memory was 169.8 MB in the beginning and 156.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 4314.58 ms. Allocated memory was 186.6 MB in the beginning and 227.5 MB in the end (delta: 40.9 MB). Free memory was 155.9 MB in the beginning and 162.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 119.2 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
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3452.6ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 22.6ms, AutomataDifference: 1643.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 756.9ms, InitialAbstractionConstructionTime: 15.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 91 SDtfs, 142 SDslu, 131 SDs, 0 SdLazy, 397 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 441.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1278.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 76 PreInvPairs, 124 NumberOfFragments, 185 HoareAnnotationTreeSize, 76 FomulaSimplifications, 3203 FormulaSimplificationTreeSizeReduction, 302.1ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 1303 FormulaSimplificationTreeSizeReductionInter, 429.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 28]: Loop Invariant
Derived loop invariant: (m == 0 && x == 0) || ((0 <= m && 1 <= x) && m + 1 <= n)
- 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: \old(cond) == 0 || !(cond == 0)
RESULT: Ultimate proved your program to be correct!
Received shutdown request...