/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/nla-digbench-scaling/hard-u_valuebound100.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:24:03,604 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:24:03,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:24:03,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:24:03,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:24:03,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:24:03,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:24:03,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 08:24:03,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 08:24:03,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-05-01 08:24:03,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 08:24:03,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 08:24:03,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 08:24:03,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 08:24:03,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:24:03,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:24:03,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:24:03,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:24:03,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:24:03,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:24:03,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:24:03,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:24:03,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:24:03,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 08:24:03,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-05-01 08:24:03,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2021-05-01 08:24:03,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 08:24:03,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:24:03,726 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 08:24:03,742 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:24:03,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:24:03,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:24:03,745 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:24:03,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:24:03,746 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:24:03,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:24:03,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:24:03,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:24:03,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:24:03,747 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:24:03,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:24:03,747 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:24:03,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:24:03,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:24:03,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:24:03,748 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:24:03,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:24:03,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:24:03,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:24:03,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:24:03,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:24:03,749 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:24:03,749 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:24:04,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:24:04,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:24:04,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:24:04,109 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:24:04,109 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:24:04,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound100.c
[2021-05-01 08:24:04,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7753c02/3bc1ce9af19047fc83112ab9b85dc5ce/FLAG012480361
[2021-05-01 08:24:04,584 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:24:04,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound100.c
[2021-05-01 08:24:04,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7753c02/3bc1ce9af19047fc83112ab9b85dc5ce/FLAG012480361
[2021-05-01 08:24:05,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7753c02/3bc1ce9af19047fc83112ab9b85dc5ce
[2021-05-01 08:24:05,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:24:05,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:24:05,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:24:05,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:24:05,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:24:05,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e12908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05, skipping insertion in model container
[2021-05-01 08:24:05,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:24:05,032 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:24:05,147 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound100.c[545,558]
[2021-05-01 08:24:05,161 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:24:05,168 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:24:05,179 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound100.c[545,558]
[2021-05-01 08:24:05,186 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:24:05,198 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:24:05,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05 WrapperNode
[2021-05-01 08:24:05,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:24:05,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:24:05,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:24:05,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:24:05,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (1/1) ...
[2021-05-01 08:24:05,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:24:05,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:24:05,228 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:24:05,228 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:24:05,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (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 08:24:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:24:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:24:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:24:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:24:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:24:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:24:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:24:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:24:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:24:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int
[2021-05-01 08:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:24:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:24:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:24:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:24:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:24:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:24:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:24:05,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:24:05,702 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 08:24:05,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:05 BoogieIcfgContainer
[2021-05-01 08:24:05,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:24:05,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:24:05,708 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:24:05,711 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:24:05,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:24:05" (1/3) ...
[2021-05-01 08:24:05,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e514b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:05, skipping insertion in model container
[2021-05-01 08:24:05,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:05" (2/3) ...
[2021-05-01 08:24:05,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e514b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:05, skipping insertion in model container
[2021-05-01 08:24:05,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:05" (3/3) ...
[2021-05-01 08:24:05,713 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound100.c
[2021-05-01 08:24:05,718 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:24:05,722 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:24:05,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:24:05,765 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:24:05,765 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:24:05,765 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:24:05,765 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:24:05,765 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:24:05,766 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:24:05,766 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:24:05,766 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:24:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2021-05-01 08:24:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:24:05,791 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:05,792 INFO L519 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]
[2021-05-01 08:24:05,792 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:05,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times
[2021-05-01 08:24:05,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:05,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48671313]
[2021-05-01 08:24:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:05,866 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-05-01 08:24:06,135 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:06,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48671313]
[2021-05-01 08:24:06,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [48671313] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:06,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:06,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:24:06,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046362094]
[2021-05-01 08:24:06,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:24:06,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:06,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:24:06,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:24:06,155 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-05-01 08:24:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:06,387 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions.
[2021-05-01 08:24:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:24:06,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28
[2021-05-01 08:24:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:06,396 INFO L225 Difference]: With dead ends: 69
[2021-05-01 08:24:06,396 INFO L226 Difference]: Without dead ends: 33
[2021-05-01 08:24:06,399 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:24:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-05-01 08:24:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2021-05-01 08:24:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-05-01 08:24:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions.
[2021-05-01 08:24:06,454 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28
[2021-05-01 08:24:06,454 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:06,454 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions.
[2021-05-01 08:24:06,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-05-01 08:24:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions.
[2021-05-01 08:24:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:24:06,456 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:06,456 INFO L519 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]
[2021-05-01 08:24:06,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:24:06,457 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:06,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times
[2021-05-01 08:24:06,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:06,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435413098]
[2021-05-01 08:24:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:06,461 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 08:24:06,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:06,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:06,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:06,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:06,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-05-01 08:24:06,603 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:06,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435413098]
[2021-05-01 08:24:06,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [435413098] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:06,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:06,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 08:24:06,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946363864]
[2021-05-01 08:24:06,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 08:24:06,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:06,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 08:24:06,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 08:24:06,606 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2021-05-01 08:24:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:07,071 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions.
[2021-05-01 08:24:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 08:24:07,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28
[2021-05-01 08:24:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:07,074 INFO L225 Difference]: With dead ends: 46
[2021-05-01 08:24:07,074 INFO L226 Difference]: Without dead ends: 44
[2021-05-01 08:24:07,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 08:24:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-05-01 08:24:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37.
[2021-05-01 08:24:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-05-01 08:24:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions.
[2021-05-01 08:24:07,099 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28
[2021-05-01 08:24:07,099 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:07,099 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions.
[2021-05-01 08:24:07,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2021-05-01 08:24:07,100 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions.
[2021-05-01 08:24:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-05-01 08:24:07,100 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:07,101 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:24:07,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:24:07,101 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:07,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times
[2021-05-01 08:24:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470494844]
[2021-05-01 08:24:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:07,107 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17
[2021-05-01 08:24:07,229 INFO L142 QuantifierPusher]: treesize reduction 19, result has 83.2 percent of original size
[2021-05-01 08:24:07,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94
[2021-05-01 08:24:07,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:07,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:07,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2021-05-01 08:24:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-05-01 08:24:07,335 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:07,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470494844]
[2021-05-01 08:24:07,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1470494844] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:07,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:07,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 08:24:07,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472378937]
[2021-05-01 08:24:07,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 08:24:07,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 08:24:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 08:24:07,338 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-05-01 08:24:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:07,759 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions.
[2021-05-01 08:24:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 08:24:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2021-05-01 08:24:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:07,761 INFO L225 Difference]: With dead ends: 50
[2021-05-01 08:24:07,761 INFO L226 Difference]: Without dead ends: 48
[2021-05-01 08:24:07,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 232.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 08:24:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-05-01 08:24:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41.
[2021-05-01 08:24:07,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-05-01 08:24:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions.
[2021-05-01 08:24:07,782 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33
[2021-05-01 08:24:07,783 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:07,783 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions.
[2021-05-01 08:24:07,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-05-01 08:24:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions.
[2021-05-01 08:24:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-05-01 08:24:07,784 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:07,784 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:24:07,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-05-01 08:24:07,785 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:07,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:07,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times
[2021-05-01 08:24:07,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063358202]
[2021-05-01 08:24:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:07,788 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:07,798 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:24:07,798 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:24:07,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-05-01 08:24:07,814 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:24:07,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:24:07 BoogieIcfgContainer
[2021-05-01 08:24:07,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:24:07,816 INFO L168 Benchmark]: Toolchain (without parser) took 2811.47 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 169.8 MB in the beginning and 193.4 MB in the end (delta: -23.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:07,816 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 203.4 MB. Free memory is still 186.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:24:07,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.42 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 159.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:07,817 INFO L168 Benchmark]: Boogie Preprocessor took 26.90 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 158.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:07,818 INFO L168 Benchmark]: RCFGBuilder took 475.93 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 173.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:07,818 INFO L168 Benchmark]: TraceAbstraction took 2106.92 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 173.1 MB in the beginning and 193.4 MB in the end (delta: -20.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:07,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.13 ms. Allocated memory is still 203.4 MB. Free memory is still 186.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 191.42 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 159.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 26.90 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 158.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 475.93 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 173.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2106.92 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 173.1 MB in the beginning and 193.4 MB in the end (delta: -20.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L23] unsigned int A, B;
[L24] unsigned int r, d, p, q;
[L25] A = __VERIFIER_nondet_unsigned_int()
[L26] CALL assume_abort_if_not(A>=0 && A<=100)
[L12] COND FALSE !(!cond)
[L26] RET assume_abort_if_not(A>=0 && A<=100)
[L27] B = __VERIFIER_nondet_unsigned_int()
[L28] CALL assume_abort_if_not(B>=0 && B<=100)
[L12] COND FALSE !(!cond)
[L28] RET assume_abort_if_not(B>=0 && B<=100)
[L29] CALL assume_abort_if_not(B >= 1)
[L12] COND FALSE !(!cond)
[L29] RET assume_abort_if_not(B >= 1)
[L31] r = A
[L32] d = B
[L33] p = 1
[L34] q = 0
[L36] COND TRUE 1
[L37] CALL __VERIFIER_assert(q == 0)
[L15] COND FALSE !(!(cond))
[L37] RET __VERIFIER_assert(q == 0)
[L38] CALL __VERIFIER_assert(r == A)
[L15] COND FALSE !(!(cond))
[L38] RET __VERIFIER_assert(r == A)
[L39] CALL __VERIFIER_assert(d == B * p)
[L15] COND TRUE !(cond)
[L17] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2039.9ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 16.8ms, AutomataDifference: 1152.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 92 SDslu, 77 SDs, 0 SdLazy, 233 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 511.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 489.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 84.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...