/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 03:47:55,125 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 03:47:55,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 03:47:55,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 03:47:55,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 03:47:55,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 03:47:55,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-05-01 03:47:55,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 03:47:55,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 03:47:55,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 03:47:55,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 03:47:55,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 03:47:55,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 03:47:55,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 03:47:55,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 03:47:55,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 03:47:55,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 03:47:55,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 03:47:55,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 03:47:55,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 03:47:55,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-05-01 03:47:55,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 03:47:55,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 03:47:55,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2021-05-01 03:47:55,208 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 03:47:55,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 03:47:55,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 03:47:55,210 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 03:47:55,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 03:47:55,211 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 03:47:55,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 03:47:55,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 03:47:55,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 03:47:55,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 03:47:55,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 03:47:55,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 03:47:55,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 03:47:55,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 03:47:55,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-05-01 03:47:55,213 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2021-05-01 03:47:55,214 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 03:47:55,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 03:47:55,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 03:47:55,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 03:47:55,497 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 03:47:55,497 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 03:47:55,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c
[2021-05-01 03:47:55,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0330ec08/74a08b02d8874448a02fb7754df8a26a/FLAGb171c5511
[2021-05-01 03:47:55,889 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 03:47:55,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c
[2021-05-01 03:47:55,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0330ec08/74a08b02d8874448a02fb7754df8a26a/FLAGb171c5511
[2021-05-01 03:47:56,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0330ec08/74a08b02d8874448a02fb7754df8a26a
[2021-05-01 03:47:56,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 03:47:56,310 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2021-05-01 03:47:56,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 03:47:56,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 03:47:56,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 03:47:56,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1230d531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56, skipping insertion in model container
[2021-05-01 03:47:56,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 03:47:56,326 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 03:47:56,423 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469]
[2021-05-01 03:47:56,433 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 03:47:56,438 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 03:47:56,482 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469]
[2021-05-01 03:47:56,484 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 03:47:56,496 INFO L208 MainTranslator]: Completed translation
[2021-05-01 03:47:56,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56 WrapperNode
[2021-05-01 03:47:56,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 03:47:56,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 03:47:56,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 03:47:56,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 03:47:56,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 03:47:56,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 03:47:56,532 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 03:47:56,532 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 03:47:56,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (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 03:47:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 03:47:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 03:47:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 03:47:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 03:47:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 03:47:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 03:47:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 03:47:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 03:47:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 03:47:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 03:47:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 03:47:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 03:47:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 03:47:56,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 03:47:56,790 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 03:47:56,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:47:56 BoogieIcfgContainer
[2021-05-01 03:47:56,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 03:47:56,792 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2021-05-01 03:47:56,792 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2021-05-01 03:47:56,793 INFO L275 PluginConnector]: IcfgTransformer initialized
[2021-05-01 03:47:56,794 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:47:56" (1/1) ...
[2021-05-01 03:47:56,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:47:56 BasicIcfg
[2021-05-01 03:47:56,813 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2021-05-01 03:47:56,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 03:47:56,814 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 03:47:56,816 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 03:47:56,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 03:47:56" (1/4) ...
[2021-05-01 03:47:56,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b37bd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:47:56, skipping insertion in model container
[2021-05-01 03:47:56,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:47:56" (2/4) ...
[2021-05-01 03:47:56,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b37bd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:47:56, skipping insertion in model container
[2021-05-01 03:47:56,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:47:56" (3/4) ...
[2021-05-01 03:47:56,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b37bd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:47:56, skipping insertion in model container
[2021-05-01 03:47:56,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:47:56" (4/4) ...
[2021-05-01 03:47:56,818 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.cJordan
[2021-05-01 03:47:56,822 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2021-05-01 03:47:56,824 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 03:47:56,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 03:47:56,846 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 03:47:56,846 INFO L377 AbstractCegarLoop]: Hoare is false
[2021-05-01 03:47:56,846 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates
[2021-05-01 03:47:56,847 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 03:47:56,847 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 03:47:56,847 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 03:47:56,847 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 03:47:56,847 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 03:47:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 03:47:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-05-01 03:47:56,858 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:47:56,859 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:47:56,859 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:47:56,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:47:56,862 INFO L82 PathProgramCache]: Analyzing trace with hash 959820703, now seen corresponding path program 1 times
[2021-05-01 03:47:56,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:47:56,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611318576]
[2021-05-01 03:47:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:47:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:56,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:56,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:56,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:56,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:47:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:57,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,041 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 03:47:57,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:47:57,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611318576]
[2021-05-01 03:47:57,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611318576] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:47:57,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:47:57,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 03:47:57,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464375400]
[2021-05-01 03:47:57,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 03:47:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:47:57,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 03:47:57,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 03:47:57,055 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 03:47:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:47:57,090 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions.
[2021-05-01 03:47:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 03:47:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12
[2021-05-01 03:47:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:47:57,104 INFO L225 Difference]: With dead ends: 21
[2021-05-01 03:47:57,104 INFO L226 Difference]: Without dead ends: 14
[2021-05-01 03:47:57,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 03:47:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2021-05-01 03:47:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2021-05-01 03:47:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 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 03:47:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2021-05-01 03:47:57,123 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12
[2021-05-01 03:47:57,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:47:57,123 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2021-05-01 03:47:57,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 03:47:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2021-05-01 03:47:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-05-01 03:47:57,123 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:47:57,123 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:47:57,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 03:47:57,124 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:47:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:47:57,125 INFO L82 PathProgramCache]: Analyzing trace with hash 960744224, now seen corresponding path program 1 times
[2021-05-01 03:47:57,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:47:57,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512834339]
[2021-05-01 03:47:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:47:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:57,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:47:57,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:47:57,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:47:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:57,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,261 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 03:47:57,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:47:57,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512834339]
[2021-05-01 03:47:57,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512834339] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:47:57,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:47:57,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 03:47:57,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689648180]
[2021-05-01 03:47:57,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 03:47:57,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:47:57,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 03:47:57,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 03:47:57,264 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 03:47:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:47:57,402 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions.
[2021-05-01 03:47:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-05-01 03:47:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12
[2021-05-01 03:47:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:47:57,404 INFO L225 Difference]: With dead ends: 19
[2021-05-01 03:47:57,404 INFO L226 Difference]: Without dead ends: 16
[2021-05-01 03:47:57,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2021-05-01 03:47:57,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2021-05-01 03:47:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2021-05-01 03:47:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 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 03:47:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2021-05-01 03:47:57,407 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12
[2021-05-01 03:47:57,407 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:47:57,407 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2021-05-01 03:47:57,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 03:47:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2021-05-01 03:47:57,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-05-01 03:47:57,407 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:47:57,408 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:47:57,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 03:47:57,408 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:47:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:47:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash 767672894, now seen corresponding path program 1 times
[2021-05-01 03:47:57,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:47:57,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063173504]
[2021-05-01 03:47:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:47:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:57,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,460 INFO L142 QuantifierPusher]: treesize reduction 76, result has 35.0 percent of original size
[2021-05-01 03:47:57,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41
[2021-05-01 03:47:57,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:47:57,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:47:57,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:47:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:57,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 03:47:57,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:47:57,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063173504]
[2021-05-01 03:47:57,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063173504] provided 0 perfect and 1 imperfect interpolant sequences
[2021-05-01 03:47:57,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125995638]
[2021-05-01 03:47:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 03:47:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:47:57,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-05-01 03:47:57,590 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-05-01 03:47:57,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 03:47:57,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:47:57,690 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size
[2021-05-01 03:47:57,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:47:57,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:47:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 03:47:57,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125995638] provided 0 perfect and 1 imperfect interpolant sequences
[2021-05-01 03:47:57,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-05-01 03:47:57,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10
[2021-05-01 03:47:57,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484763538]
[2021-05-01 03:47:57,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-05-01 03:47:57,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:47:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-05-01 03:47:57,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2021-05-01 03:47:57,699 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 03:47:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:47:57,889 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions.
[2021-05-01 03:47:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-05-01 03:47:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 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 03:47:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:47:57,891 INFO L225 Difference]: With dead ends: 17
[2021-05-01 03:47:57,891 INFO L226 Difference]: Without dead ends: 0
[2021-05-01 03:47:57,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2021-05-01 03:47:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-05-01 03:47:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-05-01 03:47:57,892 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 03:47:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-05-01 03:47:57,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14
[2021-05-01 03:47:57,892 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:47:57,892 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-05-01 03:47:57,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 03:47:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-05-01 03:47:57,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-05-01 03:47:58,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2021-05-01 03:47:58,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:47:58 BasicIcfg
[2021-05-01 03:47:58,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 03:47:58,105 INFO L168 Benchmark]: Toolchain (without parser) took 1794.42 ms. Allocated memory is still 191.9 MB. Free memory was 156.4 MB in the beginning and 129.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,105 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 191.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.91 ms. Allocated memory is still 191.9 MB. Free memory was 156.2 MB in the beginning and 175.2 MB in the end (delta: -19.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,105 INFO L168 Benchmark]: Boogie Preprocessor took 33.24 ms. Allocated memory is still 191.9 MB. Free memory was 175.2 MB in the beginning and 174.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,106 INFO L168 Benchmark]: RCFGBuilder took 260.01 ms. Allocated memory is still 191.9 MB. Free memory was 174.0 MB in the beginning and 159.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,106 INFO L168 Benchmark]: IcfgTransformer took 20.71 ms. Allocated memory is still 191.9 MB. Free memory was 159.9 MB in the beginning and 158.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,106 INFO L168 Benchmark]: TraceAbstraction took 1290.42 ms. Allocated memory is still 191.9 MB. Free memory was 158.3 MB in the beginning and 129.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB.
[2021-05-01 03:47:58,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.11 ms. Allocated memory is still 191.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 184.91 ms. Allocated memory is still 191.9 MB. Free memory was 156.2 MB in the beginning and 175.2 MB in the end (delta: -19.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 33.24 ms. Allocated memory is still 191.9 MB. Free memory was 175.2 MB in the beginning and 174.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 260.01 ms. Allocated memory is still 191.9 MB. Free memory was 174.0 MB in the beginning and 159.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
* IcfgTransformer took 20.71 ms. Allocated memory is still 191.9 MB. Free memory was 159.9 MB in the beginning and 158.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1290.42 ms. Allocated memory is still 191.9 MB. Free memory was 158.3 MB in the beginning and 129.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 14]: 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 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1256.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.0ms, AutomataDifference: 396.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 41 SDslu, 50 SDs, 0 SdLazy, 106 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 356.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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: 11.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.3ms SsaConstructionTime, 83.6ms SatisfiabilityAnalysisTime, 415.6ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 1 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
Received shutdown request...